doc: remove note highlighting in GOVERNANCE doc
requested to merge github/fork/Trott/i-do-not-like-note-callouts-sam-i-am-i-do-not-like-them-here-or-there-i-do-not-like-them-anywhere into master
Incorporate note into main text.
It's minor, but there is no need for a note here.
Checklist
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documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
doc