It appears that when the primary branch was renamed from 'master' to 'main' #1263, it broke GitHub pages for the project, as the homepage currently 404's when you try to reach it.
I took a look at the Settings / Pages page and its settings show main and /docs being the chosen branch and directory. Perhaps it needs a build, a change in the docs directory, to take hold?
Update: a0c4a1cd039821547d8c46c6fe3eb1290bc05b3f did it, and yes it worked like that.
As you mentioned on Twitter, forcing the documentation to update seems to have fixed it. I really appreciate your swift response and fix!
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I took a look at the Settings / Pages page and its settings show main and /docs being the chosen branch and directory. Perhaps it needs a build, a change in the docs directory, to take hold?
Update: a0c4a1cd039821547d8c46c6fe3eb1290bc05b3f did it, and yes it worked like that.