This will replace the '\' character with nothing only when it is the last
character in the line :
For Example :
```
description: "body返回： <br/>{\"body\":{},\"statusCode\":\"120\",\"errorMsg\" \
:\"没有为此用户分配有效的坐席\"}"
```
In this , it will just replace the last '\' in the first line,
after replacing it becomes
```
description: "body返回： <br/>{\"body\":{},\"statusCode\":\"120\",\"errorMsg\"
:\"没有为此用户分配有效的坐席\"}"
```
[ Full content available at:
https://github.com/apache/incubator-servicecomb-service-center/pull/447 ]
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