[Feature] [doc] Update table schema for task-structure and metadata

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• I had searched in the issues and found no similar issues.

What happened

I find out task-structure and metadata table schema is out of dated. I would confuse users when they read them. I think we should update them in the next version release.

BTW, I think we should find a good way to auto-update the table schema to just do not show them in our doc. When some PR upgrade the schema by without update the doc, will make our doc out-of-date

What you expected to happen

ATT

How to reproduce

ATT

Anything else

No response

Version

2.0.4

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct