The github project page is for developers, and Github already gives you tons of ways to make a user website. Don't ask your users to visit github.com/group/project, make them visit group.github.io/project, like any sane person.

Same with Gitlab, BTW.

And if you don't like the full static site, use the wiki, or guide your users in the first paragraphs of the README so they find the user information if they must.