bugfix: 修复教程标题缺失

Author: Guo-Zhang

_toc.yml

@@ -3,7 +3,7 @@ root: README.md
 chapters:
   - file: local_developing_tools/README.md
     sections: 
-      - file: local_developing_tools/flutter_sdk_and_android_studio.md
+      - file: local_developing_tools/android_studio.md
   - file: dart_language/README.md
     sections:
       - file: dart_language/expections.md

…_tools/flutter_sdk_and_android_studio.md local_developing_tools/android_studio.mdlocal_developing_tools/flutter_sdk_and_android_studio.md renamed to local_developing_tools/android_studio.md local_developing_tools/flutter_sdk_and_android_studio.md renamed to local_developing_tools/android_studio.md

@@ -1,46 +1,44 @@
-### Android Studio
+# 安装Android Studio
 
 作用：开发安卓APP，目前内部用于基于Flutter开发跨端APP
 
-##### 1.下载地址
+## 下载地址
 
 [Download Android Studio and SDK tools   Android Developers](https://developer.android.google.cn/studio)
 
-##### 2.安装及使用教程
+## 安装及使用教程
 
 [Android Studio超详细安装教程 - 知乎](https://zhuanlan.zhihu.com/p/80051318)
 
 [android studio安装教程，史上最详细(超多图)！！_piupiu78的博客-CSDN博客_android studio安装教程](https://blog.csdn.net/piupiu78/article/details/112170085)
 
-##### 3.插件安装教程（我们目前只要求安装Flutter与Dart）
+## 插件安装教程（我们目前只要求安装Flutter与Dart）
 
 [Android Studio如何安装插件-百度经验](https://jingyan.baidu.com/article/a24b33cdb5b39a58ff002b60.html)
 
 [AndroidStudio手动安装插件 - TongMeng - 博客园](https://www.cnblogs.com/yjpjy/p/11525511.html)
 
-##### 4.插件市场
+## 插件市场
 
 [Plugins  JetBrains](http://plugins.jetbrains.com/androidstudio)
 
-
-
-### FLutter
+## FLutter插件
 
 作用：Android Studio中Flutter插件的使用需要
 
-##### 1.下载地址及配置教程
+### 下载地址及配置教程
 
 [起步:安装Flutter  - Flutter中文网 ](https://flutterchina.club/get-started/install/)
 
 [Flutter入门——安装与开发环境配置 - 知乎](https://zhuanlan.zhihu.com/p/110208018)的前两个部分
 
-##### 2.在Flutter命令行输入flutter doctor可能出现的问题的解决
+### 在Flutter命令行输入flutter doctor可能出现的问题的解决
 
-2.1.Unable to 'pub upgrade' flutter tool
+1. Unable to 'pub upgrade' flutter tool
 
 [Unable to 'pub upgrade' flutter tool. Retrying in five seconds_yangchenglangzi的博客-CSDN博客](https://blog.csdn.net/yangchenglangzi/article/details/89981488)
 
-2.2.✗ Flutter plugin not installed; this adds Flutter specific functionality.
+2.✗ Flutter plugin not installed; this adds Flutter specific functionality.
 
    	✗ Dart plugin not installed; this adds Dart specific functionality
 
@@ -58,10 +56,10 @@
 
 [Android Studio (version 4.1) ✗ Flutter plugin not installed; this adds Flutter specific functiona... - 简书](https://www.jianshu.com/p/03201f4f69f6)
 
-2.3卡在Running pub upgrade状态
+3. 卡在Running pub upgrade状态
 
 [Flutter:  Running pub upgrade.. Flutter Setup:Building flutter tool..._a1050762704的博客-CSDN博客](https://blog.csdn.net/a1050762704/article/details/106250840)
 
-2.4这篇文章总结了作者在配置Flutter过程中遇到的所有问题，可以帮助你更准确的定位你的问题
+4. 这篇文章总结了作者在配置Flutter过程中遇到的所有问题，可以帮助你更准确的定位你的问题
 
 [flutter 安装以及遇到的坑 - 简书](https://www.jianshu.com/p/4836bcbc8b38)