Not sure why your reply was deleted, but FWIW...
> https://www.colbyrussell.com/2020/05/13/psa-wikis.html
Forking a github repository to edit one file and submit it back as a PR is super-duper easy these days. You can do it entirely from the UI by just clicking the pencil icon when viewing the file you want to edit.
I'd argue the only real difference from a classic Wiki is that you need to submit the change for review. There's really no practical way we could eliminate the need for review.