[Bug][doc] Get 404 with contributor-guide

[zhongjiajie]

**For better global communication, Please describe it in English. If you feel the description in English is not clear, then you can append description in Chinese(just for Mandarin(CN)), thx! **
Describe the bug
When click https://dolphinscheduler.apache.org/en-us/community/contributor-guide.html, browser get 404 as return.

To Reproduce
Steps to reproduce the behavior, for example:

1. click https://dolphinscheduler.apache.org/en-us/community/contributor-guide.html,

[github-actions]

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