Issue on docs CREATE-DATABASE

[yangyichao-mango]

• Page Link: https://doris.apache.org/zh-CN/docs/sql-manual/sql-statements/database/CREATE-DATABASE

• Version: 2.1

• Reason: 如图所示，目录下的所有的文档对应的markdown格式有问题

• 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