Fixed spelling issues. #13170

Job	Run time
Test mypyc suite with 32-bit Python	7m 14s
Test suite with Python nightly	13m 57s
Test suite with py38-ubuntu, mypyc-compiled	18m 8s
Test suite with py38-windows-64	20m 15s
Test suite with py39-ubuntu	18m 27s
Test suite with py310-ubuntu	15m 43s
Test suite with py311-ubuntu, mypyc-compiled	15m 31s
Test suite with py312-ubuntu, mypyc-compiled	17m 44s
mypyc runtime tests with py39-macos	5m 4s
mypyc runtime tests with py38-debug-build-ubuntu	4m 19s
Type check our own code (py38-ubuntu)	1m 48s
Type check our own code (py38-windows-64)	2m 22s
Formatting and code style with Black + ruff	35s
	2h 21m 7s

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