mypy

gh-82151: Update and improve urlsplit docstring (#152985) #22340

Job	Run time
Run mypy on Tools/check-c-api-docs	31s
Run mypy on Tools/cases_generator	31s
Run mypy on Tools/clinic	30s
Run mypy on Lib/_pyrepl	32s
Run mypy on Lib/tomllib	28s
Run mypy on Tools/build	30s
Run mypy on Tools/peg_generator	35s
Run mypy on Tools/jit	30s
Run mypy on Lib/test/libregrtest	30s
	4m 37s

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