document that `atom` feeds are available for things and explain how to access them

[jsoref]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/organizations/collaborating-with-groups-in-organizations/about-your-organizations-news-feed
https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes

What part(s) of the article would you like to see updated?

Add a page or sections to pages that talk about which things have atom feeds and the urls to access them

Additional information

I searched through all 4 pages of https://docs.github.com/en/search?query=feed and nothing turned up to tell me how to get an atom feed for releases.

there's a reference in https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes to a "releases" "feed', but it's effectively https://github.com/home-assistant/core/releases and not https://github.com/home-assistant/core/releases.atom

[Sharra-writes]

Thanks for opening an issue! I'll get it triaged for review.