[📑 Docs]: update Community Readme.md

[thulieblack]

What Dev Docs changes are you proposing?

We need to update the README.MD as the sponsors section is outdated

https://github.com/asyncapi/community/blob/master/README.md

Code of Conduct

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

[derberg]

actually all from below can be removed and replaced with some overal info about the community and link to community docs

[Aksshay88]

@thulieblack and @derberg I would like to update the Readme.md . Since I have a pretty much good knowledge in documentation stuffs .
Could I work on this issue ?

[thulieblack]

@Aksshay88 you need to complete the Tech Writers onboarding first

[thulieblack]

@Sonalilipsa17375 you can

• add the Code of Conduct docs
• highlight the contribution flow https://github.com/asyncapi/website/blob/master/CONTRIBUTING.md#contribution-flow
• And the community docs on the website under https://www.asyncapi.com/docs/community

[Sonalilipsa17375]

@thulieblack I have made a PR #1770 , could you please review and suggest if anything required or needs improvement.