mypy

gh-138122: Add code examples to the profiling.sampling ddocs (#142609) #18458

Job	Run time
Run mypy on Lib/tomllib	18s
Run mypy on Tools/cases_generator	20s
Run mypy on Tools/peg_generator	21s
Run mypy on Lib/_pyrepl	21s
Run mypy on Tools/build	21s
Run mypy on Lib/test/libregrtest	24s
Run mypy on Tools/jit	22s
Run mypy on Tools/clinic	21s
	2m 48s

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