HTML documentation for latest MusicXML version?

I've been using
https://usermanuals.musicxml.com/MusicXML/Content/MusicXMLReference.htm as
a browsable reference for MusicXML, but I notice it was last updated in
2015. Is there an up-to-date documentation site for version 3.1?
https://w3c.github.io/musicxml/ does not seem to include the full
documentation - only changes.

If it's not available anywhere, and given some interest from the community,
I'd be happy to engage in standing up a site generator for the
latest version that can be kept updated with GitHub commits.