Is there a github project for the prefect website?

Do you mean for the prefect.io marketing website, or for our docs?

We do manage it via a private repo - if you have any suggestions feel free to DM me!

Looking again, my issues was actually on docs.prefect.io; does that change anything?

That's right - also, if you click the little pencil on the top right of any docs page, a draft PR will be opened where you can make proposed docs edits