AI Sessionizer 0.4.0 docs: the commit with the Homebrew fix (#932)

The Install page of the v0.4.0 tag tells a Homebrew user to tap without
trusting the tap first, and Homebrew 7 then refuses to load it. The docs
commit of 0.4.0 becomes the branch docs/v0.4.0 of the repository, which is
the tag with that one page fixed, so the published documentation of 0.4.0
and of Latest gives commands that work.