docs: update README

[100ask]

Description of the feature or fix

A clear and concise description of what the bug or new feature is.

Notes

• Update the Documentation if needed.
• Add Examples if relevant.
• Add Tests if applicable.
• If you added new options to lv_conf_template.h run lv_conf_internal_gen.py and update Kconfig.
• Run scripts/code-format.py (astyle version v3.4.10 needs to be installed) and follow the Code Conventions.
• Mark the Pull request as Draft while you are working on the first version, and mark is as Ready when it's ready for review.
• When changes were requested, re-request review to notify the maintainers.
• Help us to review this Pull Request! Anyone can approve or request changes.

[lhdjply]

• Similarly, the README.md link needs to be modified.

• This paragraph should be removed because 9.0 is already a release
  

[100ask]

• Similarly, the README.md link needs to be modified.
• This paragraph should be removed because 9.0 is already a release

Modified, thank you!