DOC: Address issue where documentation is excluded due to a gitignore rule.

(cherry picked from commit fbc4e77321f6e92b7af658ce8257b6231c6ebac9)
DOC: indicate that weight zero is reported as DRAIN

It's not the same state but reported as such.
(cherry picked from commit c5af3a6d15358fa8b5be6151239862efde4c36f7)