Merge pull request #2 from wujunze/wujunze-patch-2

修正错别字

Author: wujunze

README_zh.md

@@ -1,4 +1,4 @@
-# 实战开发一个Nginx拓展 (Nginx Module)
+# 实战开发一个Nginx扩展 (Nginx Module)
 
 ## nginx_module_echo
 使用echo指令输出一个字符串
@@ -82,4 +82,4 @@ NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/src/ngx_http_echo_module.c"
 > 1. http://wiki.nginx.org/Configuration
 > 2. http://tengine.taobao.org/book/
 > 3. **http://blog.codinglabs.org/articles/intro-of-nginx-module-development.html**
-> 4. https://www.nginx.com/resources/wiki/modules/
+> 4. https://www.nginx.com/resources/wiki/modules/