Fixed spelling issues. #13171

Job	Run time
Test mypyc suite with 32-bit Python	7m 0s
Test suite with Python nightly	14m 1s
Test suite with py38-ubuntu, mypyc-compiled	17m 33s
Test suite with py38-windows-64	20m 23s
Test suite with py39-ubuntu	19m 8s
Test suite with py310-ubuntu	15m 40s
Test suite with py311-ubuntu, mypyc-compiled	16m 0s
Test suite with py312-ubuntu, mypyc-compiled	17m 42s
mypyc runtime tests with py39-macos	5m 26s
mypyc runtime tests with py38-debug-build-ubuntu	4m 35s
Type check our own code (py38-ubuntu)	1m 53s
Type check our own code (py38-windows-64)	2m 21s
Formatting and code style with Black + ruff	38s
	2h 22m 20s

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