Fixed typo in documentation #944

Job	Run time
python_no_gil	2m 52s
build_python_27 (ubuntu-20.04, yes)	2m 35s
build_python_27 (ubuntu-20.04, no)	2m 33s
build (3.6, yes, ubuntu-20.04)	2m 27s
test_c_windows (x64)	1m 1s
build_python_27 (windows-latest, yes)	3m 55s
build (3.6, no, ubuntu-20.04)	2m 23s
build_python_27 (windows-latest, no)	4m 2s
test_c_windows (win32)	1m 20s
build (3.7, yes, ubuntu-20.04)	2m 24s
build (3.7, no, ubuntu-20.04)	2m 25s
mypy	21s
build (3.8, yes, ubuntu-20.04)	2m 22s
test_c_linux (0, x64)	56s
build (3.8, no, ubuntu-20.04)	2m 13s
test_c_linux (0, x32)	1m 1s
build (3.9, yes, ubuntu-20.04)	2m 11s
test_c_linux (1, x64)	1m 1s
build (3.9, no, ubuntu-20.04)	2m 15s
test_c_linux (1, x32)	1m 1s
build (3.10, yes, ubuntu-20.04)	2m 9s
build (3.10, no, ubuntu-20.04)	2m 17s
build (3.11, yes, ubuntu-20.04)	1m 48s
build (3.11, no, ubuntu-20.04)	1m 55s
build (3.12, yes, ubuntu-20.04)	1m 57s
build (3.12, no, ubuntu-20.04)	2m 4s
build (3.13-dev, yes, ubuntu-20.04)	2m 2s
build (3.13-dev, no, ubuntu-20.04)	2m 18s
build (3.12, yes, macos-12)	2m 56s
build (3.12, no, windows-latest)	3m 33s
build (3.12, yes, windows-latest)	4m 4s
build (pypy2.7, no, ubuntu-latest)	1m 30s
build (pypy3.9, no, ubuntu-latest)	1m 33s
	1h 11m 24s

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