fix(create readme): 生成文档 box.config 格式错误

CHANGELOG.md

@@ -10,6 +10,7 @@
  commit config | 修改提交代码配置 | [dd90ff9](https://github.com/luoxue-victor/learn_webpack/commit/dd90ff9)
  createreadme | 文档生成bug修改 | [2730902](https://github.com/luoxue-victor/learn_webpack/commit/2730902)
  delete | 删除无用代码 | [0831fc9](https://github.com/luoxue-victor/learn_webpack/commit/0831fc9)
+ merge | 合并master | [065420b](https://github.com/luoxue-victor/learn_webpack/commit/065420b)
  package | asdasdasdad | [8a4cff1](https://github.com/luoxue-victor/learn_webpack/commit/8a4cff1)
  packagejson | 调整生成文档在 commit-msg 钩子内 | [d21b695](https://github.com/luoxue-victor/learn_webpack/commit/d21b695)
  scripts cz | 修改脚本cz命令 | [b4a8c51](https://github.com/luoxue-victor/learn_webpack/commit/b4a8c51)

README.md

@@ -98,15 +98,15 @@ webpack-box lint stylelint # 自动修复 stylelint 错误
 
 ### 扩展配置
 
-  <details open=“open”>
-    <br/>
-    <summary>点击关闭/打开扩展配置</summary>
-    <br/>
-  在根目录下添加 `box.config.js`，即可配置使用
-  
-  box.config.js
+<details open=“open”>
+  <br/>
+  <summary>点击关闭/打开扩展配置</summary>
+  <br/>
+在根目录下添加 `box.config.js`，即可配置使用
+
+box.config.js
 
-  ```js
+```js
 const path = require('path')
 function resolve (dir) {
   return path.join(process.cwd(), dir)
@@ -167,8 +167,6 @@ module.exports = function (config) {
     }
   }
 }
-
-  ```
-
-  </details>  
+```
+</details>  
 

util/createReadme.js

@@ -59,20 +59,20 @@ function boxConfig () {
 
 ### 扩展配置
 
-  <details open=“open”>
-    <br/>
-    <summary>点击关闭/打开扩展配置</summary>
-    <br/>
-  在根目录下添加 \`box.config.js\`，即可配置使用
-  
-  box.config.js
+<details open=“open”>
+  <br/>
+  <summary>点击关闭/打开扩展配置</summary>
+  <br/>
+在根目录下添加 \`box.config.js\`，即可配置使用
+
+box.config.js
   
-  \`\`\`js
+\`\`\`js
 ${ctx}
-  \`\`\`
-  
-  </details>  
-  `
+\`\`\`
+
+</details>  
+`
 }
 
 function readMdBy(name) {