Update looptool documentation #9050

Job	Run time
Check code is formatted (Black)	18s
macOS setup (EXPERIMENTAL) (3.9)	39m 13s
Code linting (pylint)	4m 24s
Tests (py3.9/linux)	37m 18s
Test notebooks (py3.9/linux)	5m 50s
Tests (py3.9/win64)	44m 59s
Test notebooks (py3.9/win64)	10m 44s
pytest (user mode) (py3.9/linux)	21m 40s
Tests (py3.10/linux)	32m 11s
Test notebooks (py3.11/linux)	5m 11s
pytest (user mode) (py3.9/win64)	22m 1s
Tests (py3.10/win64)	54m 19s
Test notebooks (py3.11/win64)	12m 42s
pytest (user mode) (py3.11/linux)	15m 8s
Tests (py3.11/linux)	30m 46s
pytest (user mode) (py3.11/win64)	26m 3s
Tests (py3.11/win64)	58m 23s
Upload coverage report (Codecov)	14s
	7h 1m 24s

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