修正翻译错误

refer to self as a value 翻译错误
测试不可以pass
```swift
 let aaa = self
super.init()
```
可以pass
```swift
self.idLabel = UILabel()
et aaa = self.idLabel
super.init()
```
新文档补充内容
Merge pull request #340 from TerryHug2305/develop

修正翻译错误