fixed typo error. (#8542)

docs/react/use-with-create-react-app.en-US.md

@@ -148,7 +148,7 @@ $ yarn add babel-plugin-import --dev
 Remove the `@import '~antd/dist/antd.css';` statement added before because `babel-plugin-import` will import styles and import components like below:
 
 ```diff
-  // scr/App.js
+  // src/App.js
   import React, { Component } from 'react';
 - import Button from 'antd/lib/button';
 + import { Button } from 'antd';

docs/react/use-with-create-react-app.zh-CN.md

@@ -145,7 +145,7 @@ $ yarn add babel-plugin-import --dev
 然后移除前面在 `src/App.css` 里全量添加的 `@import '~antd/dist/antd.css';` 样式代码，并且按下面的格式引入模块。
 
 ```diff
-  // scr/App.js
+  // src/App.js
   import React, { Component } from 'react';
 - import Button from 'antd/lib/button';
 + import { Button } from 'antd';