Fixed spelling issues. #13193

Job	Run time
Test suite with py38-ubuntu, mypyc-compiled	18m 52s
Test suite with py38-windows-64	19m 53s
Test suite with py39-ubuntu	18m 5s
Test suite with py310-ubuntu	15m 42s
Test suite with py311-ubuntu, mypyc-compiled	16m 23s
Test suite with py312-ubuntu, mypyc-compiled	18m 7s
mypyc runtime tests with py39-macos	4m 16s
mypyc runtime tests with py38-debug-build-ubuntu	4m 40s
Type check our own code (py38-ubuntu)	1m 56s
Type check our own code (py38-windows-64)	2m 27s
Formatting and code style with Black + ruff	38s
Test mypyc suite with 32-bit Python	6m 55s
Test suite with Python nightly	15m 27s
	2h 23m 21s

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