mypy

gh-101100: Fix Sphinx documentation warnings in `collections.rst` (#1… #12707

Job	Run time
Run mypy on Lib/_pyrepl	16s
Run mypy on Lib/test/libregrtest	16s
Run mypy on Tools/build	15s
Run mypy on Tools/cases_generator	20s
Run mypy on Tools/clinic	15s
Run mypy on Tools/jit	18s
Run mypy on Tools/peg_generator	14s
Run mypy on Tools/wasm	15s
	2m 9s

Provide feedback