Issue on docs INSTALL-PLUGIN

[yangyichao-mango]

• Page Link: https://doris.apache.org/zh-CN/docs/sql-manual/sql-statements/plugin/INSTALL-PLUGIN

• Version: 2.1

• Reason: 如图所示，markdown格式错误

• May I contribute to this pull request? Our company has been frequently using Doris lately. If given the chance, I would also like to gradually become involved in the community.（如果确认该Issue的话，可以由我来提交PR吗，我很希望参与到doris社区当中）

• ScreenShot:
  

[yangyichao-mango]

@KassieZ Hi, can you help me confirm this issue

[KassieZ]

Hi there,
Thanks for your contributions to the documentation. Feel free to make a direct pull request to address any issues you've identified.