Add typos CI, fix typos #1351

Job	Run time
Validate CITATION.cff	12s
Pylint	33s
Documentation	27s
Tests for downstream project loopy	3m 59s
Mypy	28s
Tests for downstream project pytato	5m 43s
Pytest on Py3.8 ubuntu-latest	52s
Pytest without Numpy	59s
Ruff	7s
Pytest on Py3.8 macos-latest	2m 21s
Typos	1s
Pytest on Py3.9 ubuntu-latest	50s
Pytest on Py3.9 macos-latest	1m 44s
Pytest on Py3.x ubuntu-latest	53s
Pytest on Py3.x macos-latest	1m 1s
Pytest on Pypypy3.9 ubuntu-latest	2m 42s
Pytest on Pypypy3.9 macos-latest	7m 15s
	30m 7s

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