fix docstring

Author: HydrogenSulfate

docs/zh/api/utils/writer.md

@@ -1,6 +1,6 @@
-# Utils.reader(文件保存函数) 模块
+# Utils.writer(文件保存函数) 模块
 
-::: ppsci.utils.reader
+::: ppsci.utils.writer
     handler: python
     options:
       members:

mkdocs.yml

@@ -99,6 +99,7 @@ nav:
         - ppsci.utils.logger: zh/api/utils/logger.md
         - ppsci.utils.misc: zh/api/utils/misc.md
         - ppsci.utils.reader: zh/api/utils/reader.md
+        - ppsci.utils.writer: zh/api/utils/writer.md
         - ppsci.utils.save_load: zh/api/utils/save_load.md
         - ppsci.utils.symbolic: zh/api/utils/symbolic.md
       - ppsci.validate: zh/api/validate.md

ppsci/utils/writer.py

@@ -68,6 +68,7 @@ def save_csv_file(
         ...     delimiter=",",
         ...     encoding="utf-8",
         ... )
+
         >>> # == test.csv ==
         >>> # A,B
         >>> # 1,4.12
@@ -141,6 +142,7 @@ def save_tecplot_file(
         ...    alias_dict={"X": "x", "Y": "y"},
         ...    num_timestamps=3,
         ... )
+
         >>> # == test_t-0.tec ==
         >>> # title="./test_t-0.tec"
         >>> # variables = "X", "Y"