[backport] docs: september improvements and fixes (#83997)
Collects a bunch of docs improvements and fixes.
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Co-authored-by: Lee Robinson <lee@leerob.com>
Co-authored-by: Felix Shih <25448040+fufuShih@users.noreply.github.com>
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Co-authored-by: Steven <steven@ceriously.com>
Co-authored-by: Honda Yuto <132035494+HondaYt@users.noreply.github.com>
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Co-authored-by: Lorenzo Palmes <lpalmes@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
