Github is git underneath, and unfortunately git by itself wouldn’t make this any easier, just less / different UI.
My ideas aren’t fully baked here, but I think something like using a tw.com download and the GitHub saver, or just documenting steps for running this on nodejs locally and committing to your own fork could be possible. Merging / PRs may still need to be done by git experts.
I think, like @markkerrigan’s suggestion of creating a documentation category, this is a “top level” community project. I suggested in that other thread:
So, who wants to work on this? Who wants to help improve documentation and be part of the Documentation contributors group?