docs: preparation for v2.11.0 release (#4744)

* Remove .dev1 from version number.

* Update Changelog (starting from `nox -s make_changelog` output)

* Miscellaneous minor fixes from proofreading in GitHub web view.

* docs: minor changelog updates

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

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Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
Co-authored-by: Henry Schreiner <henryschreineriii@gmail.com>