doc: Add support version and NIT doc

[zhongjiajie]

Brief Summary of The Change

Pull Request checklist

I confirm that the following checklist has been completed.

• [x] Add/Change test cases for the changes.
• [x] Add/Change the related documentation, should also change docs/source/config.rst when you change file default_config.yaml.
• [x] (Optional) Add your change to UPDATING.md when it is an incompatible change.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 90.75%. Comparing base (bb9e428) to head (bc71317). Report is 18 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #117 +/- ## ======================================= Coverage 90.75% 90.75% ======================================= Files 63 63 Lines 2316 2316 ======================================= Hits 2102 2102 Misses 214 214 ``` | [Flag](https://app.codecov.io/gh/apache/dolphinscheduler-sdk-python/pull/117/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/apache/dolphinscheduler-sdk-python/pull/117/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache) | `90.75% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.