doc/admin: 3.32 update notes (!25231) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge docs/updates into main Sep 22, 2021

Created by: bobheadxi

part of https://github.com/sourcegraph/sourcegraph/issues/25002 , looks like this was missed in https://github.com/sourcegraph/sourcegraph/pull/25160

remove TODOs for 3.32
clearer wording for 3.30.3 -> 3.31 notes
clean up pure-docker update notes
improve titles for kubernetes-specific pages