LXD LTS v.3 documentation

Where can I get the LXD v.3 documentation?
I found only the latest version here: Containers - lxd | Ubuntu
In the past the documentation was here: https://lxd.readthedocs.io but now it is not available.

Thank you.

ok, found it on Github:

Yeah, we’re hoping to eventually get it on linuxcontainers.org alongside the 4.0 doc but we’ve had some building issues with LXD 3.0 as of late