mypy

Programming FAQ: fix some punctuaction typos (GH-144058) #19235

Job	Run time
Run mypy on Tools/peg_generator	19s
Run mypy on Lib/test/libregrtest	22s
Run mypy on Tools/build	20s
Run mypy on Lib/_pyrepl	34s
Run mypy on Tools/clinic	18s
Run mypy on Tools/jit	18s
Run mypy on Tools/cases_generator	25s
Run mypy on Lib/tomllib	22s
Run mypy on Tools/check-c-api-docs	43s
	3m 41s

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