Resubmitting #1962 (#2221)

* Resubmitting #1962

Closes @bl-ue's #1962

* Move manikin(s)->mannequin(s) to rare dictionary

Apparently 'manikin' is a legit word. Moving to rare dictionary.

* Remove dupe

* Fix incorrect result

* sort

* Remove manikin(s) from rare dictionary

Per https://github.com/codespell-project/codespell/pull/2221#issuecomment-1003922354

* Add vikivivi suggestions

* Removed manakin(s)->mannequin(s)

* More refinements