mypy

Doc: Fix duplicate words in idlelib (#136089) #15510

Job	Run time
Run mypy on Lib/test/libregrtest	19s
Run mypy on Tools/build	15s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/jit	16s
Run mypy on Tools/clinic	21s
Run mypy on Tools/cases_generator	16s
Run mypy on Tools/peg_generator	19s
Run mypy on Lib/_pyrepl	17s
	2m 20s

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