Fix markup for Java

Author: sis0k0

docs/50-demo-app/2-start-app.mdx

@@ -86,11 +86,11 @@ Right now, you should see an error message in the console, as we haven't configu
 ### Set the MongoDB connection
 To run the application in GitHub Codespaces, you now need to set the MongoDB connection string before starting the server.
 In the terminal of your Codespace, run:
-```Java
+```
 export MONGODB_URI="<YOUR_CONNECTION_STRING>"
 ```
 After setting the environment variable, start the application again with:
-```Java
+```
 mvn spring-boot:run
 ```
 
@@ -131,13 +131,13 @@ During the lab, we will use GitHub Codespaces. These instructions are here just
 
 First, clone the repository to your local machine.
 
-```bash
+```
 git clone git@github.com:mongodb-developer/library-management-system.git
 ```
 
 Then, change to the `library-management-system` directory.
 
-```bash
+```
 cd library-management-system
 ```
 
@@ -146,7 +146,7 @@ cd library-management-system
 
 Now, go to each of the `client` and `server` directories and install the dependencies.
 
-```bash
+```
 cd client
 npm install
 cd ../server
@@ -155,13 +155,13 @@ npm install
 
 Start the server application.
 
-```bash
+```
 npm start
 ```
 
 And, in another terminal window, start the client application.
 
-```bash
+```
 cd client
 npm start
 ```
@@ -178,7 +178,7 @@ This command moves you into the correct project folder that contains the Java ba
 
 2. Set the MongoDB connection string as an environment variable:
    - On Linux / macOS:
-   ```bash
+   ```
     export MONGODB_URI="<YOUR_CONNECTION_STRING>"
     ````
 
@@ -194,7 +194,7 @@ This command moves you into the correct project folder that contains the Java ba
     ```
 
 4. Run the client:
-    ```bash    
+    ```    
     (cd ../client && npm install && npm start)
     ```
 

docs/60-schema-validation/2-validate-users.mdx

@@ -93,7 +93,7 @@ The function uses the `db.command()` method to apply the schema to the `users` c
 <TabItem value="java" label="☕️ Java Spring Boot">
 In this step, we’ll review the code that applies schema validation to the users collection.
 It’s already implemented in `SchemaValidationConfig.java` no changes needed. We’ll look at two methods:
-```java title='src/main/java/com/mongodb/devrel/library/infrastructure/config/SchemaValidationConfig.java'
+```kotlin title='src/main/java/com/mongodb/devrel/library/infrastructure/config/SchemaValidationConfig.java'
 @Configuration
 public class SchemaValidationConfig {
 
@@ -139,17 +139,16 @@ You need to run the script to apply the schema to the `users` collection.
 
 1. Run the following command to apply the schema to the `users` collection:
 
-    ```sh
+    ```
     cd server
     npx tsx src/schema-validation/apply-schema.ts
-
     ```
 
     You might be prompted to allow pasting into the terminal. Click "Allow" to paste the command.
 
     Click "Enter" to run the command. After a few seconds, you should see the following output:
 
-    ```sh
+    ```
     Connecting to MongoDB Atlas...
     Connected!
 
@@ -166,7 +165,7 @@ To apply the schema, you must set this property to **apply**.
 
 Stop the application if it’s running and restart it with:
 
-```java
+```kotlin
 mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Dlab.schema-mode=apply"
 ```
 
@@ -193,7 +192,7 @@ Now that the schema validation is enabled for the `users` collection, you can te
 2. Explore the call to the `insertOne()` function around line 12 that will try to insert a new user and the error handling code around line 18.
 3. Execute the script by running the following command.
 
-  ```sh
+  ```
   npx tsx src/schema-validation/test-validation.ts
   ```
 
@@ -210,7 +209,7 @@ The [validateUserSchema](https://github.com/mongodb-developer/library-management
 
 To trigger it, stop the application if it’s running and start it again with the property set to **test**:
 
-```java
+```kotlin
 mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Dlab.schema-mode=test"
 ```
 

docs/60-schema-validation/3-validate-authors.mdx

@@ -13,7 +13,7 @@ This is an advanced exercise that requires you to write code. If you get stuck a
 1. Start by opening the `server/src/schema-validation/apply-schema.ts` file in your GitHub codespace and uncomment lines 41-61.
 1. Complete the tasks marked with `// TODO` comments.
 1. Execute the script again to apply the schema to the `authors` collection.
-    ```bash
+    ```
     cd server
     npx tsx src/schema-validation/apply-schema.ts
 
@@ -24,7 +24,7 @@ This is an advanced exercise that requires you to write code. If you get stuck a
 <TabItem value="java" label="☕️ Java Spring Boot">
 In this advanced exercise, you will extend the [SchemaValidationConfig](https://github.com/mongodb-developer/library-management-system/blob/java-server/java-server/src/main/java/com/mongodb/devrel/library/infrastructure/config/SchemaValidationConfig.java) class to support the authors collection.
 Two methods are already defined in the class, but both are left with `// TODO` markers for you to implement:
-```java title='src/main/java/com/mongodb/devrel/library/infrastructure/config/SchemaValidationConfig.java'
+```kotlin title='src/main/java/com/mongodb/devrel/library/infrastructure/config/SchemaValidationConfig.java'
 private void applyAuthorSchema(MongoDatabase db) {
     // TODO: Implement the schema for authors ($jsonSchema with required 'name', 'bio', etc.)
 }
@@ -37,11 +37,11 @@ private void validateAuthorsSchema(MongoDatabase db) {
 Once implemented, you can run the application with the right target and mode:
 
 - Apply the schema to authors
-```java
+```kotlin
 mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Dlab.schema-mode=apply -Dlab.schema-target=authors"
 ```
 - Test the schema validation for authors
-```java
+```kotlin
 mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Dlab.schema-mode=test -Dlab.schema-target=authors"
 ```
 

docs/70-indexing/1-create-compound-index.mdx

@@ -43,13 +43,13 @@ In this exercise, you will build a compound index following the ESR rule, compar
 
 3. Execute the script to create the compound index.
 
-    ```bash
+    ```
     npx tsx src/indexing/borrowed-books-index.ts
     ```
 
     After a few seconds, you should see the following output:
 
-    ```bash
+    ```
     Connecting to MongoDB Atlas...
     Connected!
 
@@ -82,7 +82,7 @@ In this exercise, you will build a compound index following the ESR rule, compar
 <TabItem value="java" label="☕️ Java Spring Boot">
 
 1. Let’s start with our `IssueDetail` record. Right now, it looks like this:
-    ```java title='src/main/java/com/mongodb/devrel/library/domain/model/IssueDetail.java'
+    ```kotlin title='src/main/java/com/mongodb/devrel/library/domain/model/IssueDetail.java'
     @Document(collection = "issueDetails")
     public record IssueDetail(
         // fields ..
@@ -92,7 +92,7 @@ In this exercise, you will build a compound index following the ESR rule, compar
 2. Now let’s optimize queries that need to filter or sort by multiple fields.
     For example, we often query by `user._id`, `returnedDate`, and `borrowDate` together.
     To speed this up, we can add a compound index using the **@CompoundIndex** annotation.  
-   ```java title='src/main/java/com/mongodb/devrel/library/domain/model/IssueDetail.java' 
+   ```kotlin title='src/main/java/com/mongodb/devrel/library/domain/model/IssueDetail.java' 
     @Document(collection = "issueDetails")
     @CompoundIndex(
             name = "user_returned_borrow_idx", 
@@ -127,7 +127,7 @@ This ensures that any indexes defined in your domain models (for example, with `
 
 1. Restart the app typing in the Terminal:
 
-    ```bash
+    ```
     mvn spring-boot:run
     ```
 As soon as the application starts, you will see log entries showing the creation of indexes, similar to the image below.

docs/75-optimize/2-patterns.mdx

@@ -77,7 +77,7 @@ At this point, we also have to do additional queries to display the first five r
 Let's look at the current code that is used to retrieve a single book.
 Open the [`BookService`](https://github.com/mongodb-developer/library-management-system/blob/java-server/java-server/src/main/java/com/mongodb/devrel/library/domain/service/BookService.java) class and check the `getBook` method:
 
-```java title='src/main/java/com/mongodb/devrel/library/domain/service/BookService.java'
+```kotlin title='src/main/java/com/mongodb/devrel/library/domain/service/BookService.java'
  public Optional<Book> getBook(String id) {
         Aggregation aggregation = Aggregation.newAggregation(
                 Aggregation.match(Criteria.where("_id").is(id)),

docs/75-optimize/3-optimize.mdx

@@ -44,7 +44,7 @@ How could you simplify this code to make it blazing fast, using the patterns we
   <summary>Click here to see the answer</summary>
 
 <div>
-```java title='src/main/java/com/mongodb/devrel/library/domain/service/BookService.java'
+```kotlin title='src/main/java/com/mongodb/devrel/library/domain/service/BookService.java'
   public Optional<Book> getBook(String id) {
     return bookRepository.findById(id);
   }

i18n/zh/docusaurus-plugin-content-docs/current/50-demo-app/2-start-app.mdx

@@ -56,19 +56,19 @@ import Screenshot from '@site/src/components/Screenshot';
 
 首先，将仓库克隆到你的本地机器。
 
-```bash
+```
 git clone git@github.com:mongodb-developer/library-management-system.git
 ```
 
 然后，切换到 library-management-system 目录。
 
-```bash
+```
 cd library-management-system
 ```
 
 现在进入 client 和 server 目录并安装依赖项。
 
-```bash
+```
 cd client
 npm install
 cd ../server
@@ -77,13 +77,13 @@ npm install
 
 启动服务器应用程序。
 
-```bash
+```
 npm start
 ```
 
 然后，在另一个终端窗口，启动客户端应用程序。
 
-```bash
+```
 cd client
 npm start
 ```

i18n/zh/docusaurus-plugin-content-docs/current/60-schema-validation/2-validate-users.mdx

@@ -80,7 +80,7 @@ const resultUsers = await db.command({
 
 1. 运行以下命令将模式应用于 `users` 集合：
 
-    ```sh
+    ```
     cd server
     node dist/schema-validation/apply-schema.js 
     ```
@@ -89,7 +89,7 @@ const resultUsers = await db.command({
 
     按回车键运行命令。几秒钟后，您应该会看到以下输出：
 
-    ```sh
+    ```
     Connecting to MongoDB Atlas...
     Connected!
 
@@ -112,7 +112,7 @@ const resultUsers = await db.command({
 
 您应该会看到一条错误消息。在错误消息的最底部，您应该会看到以下内容：
 
-```sh
+```
 "schemaRulesNotSatisfied": [{
     "operatorName": "required",
     "specifiedAs": {"required": ["name","isAdmin"]},

i18n/zh/docusaurus-plugin-content-docs/current/60-schema-validation/3-validate-authors.mdx

@@ -7,7 +7,7 @@
 1. 首先打开 GitHub Codespace 中的 `server/src/schema-validation/apply-schema.ts` 文件，并取消注释第 41-61 行。
 1. 完成标有 `// TODO` 注释的任务。
 1. 再次执行脚本以将模型应用于 `authors` 集合。
-    ```bash
+    ```
     cd server
     node dist/schema-validation/apply-schema.js 
     ```

i18n/zh/docusaurus-plugin-content-docs/current/70-indexing/1-create-compound-index.mdx

@@ -36,13 +36,13 @@ In this exercise, you will build a compound index following the ESR rule, compar
 
 3. Execute the script to create the compound index.
 
-    ```bash
+    ```
     npx tsx src/indexing/borrowed-books-index.ts
     ```
 
     After a few seconds, you should see the following output:
 
-    ```bash
+    ```
     Connecting to MongoDB Atlas...
     Connected!