Firstsawyou commented on pull request #3282:
URL: https://github.com/apache/apisix/pull/3282#issuecomment-759948000
ci failed，you need to deal with the spaces at the end of the line.
```
Scan detected 7 error(s) in 2 file(s):
[./doc/how-to-build.md]:
121: line has trailing whitespace.
122: line has trailing whitespace.
144: line has trailing whitespace.
[./doc/zh-cn/how-to-build.md]:
111: line has trailing whitespace.
117: line has trailing whitespace.
118: line has trailing whitespace.
141: line has trailing whitespace.
```
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