Clean up sphinx warnings #1035

Job	Run time
Code style	1m 18s
Doc style	55s
Doc build	1h 13m 5s
Wheelhouse for ubuntu-latest and 3.8	47s
Wheelhouse for ubuntu-latest and 3.9	47s
Wheelhouse for ubuntu-latest and 3.10	50s
Wheelhouse for ubuntu-latest and 3.11	31s
Wheelhouse for windows-latest and 3.8	1m 16s
Wheelhouse for windows-latest and 3.9	1m 6s
Wheelhouse for windows-latest and 3.10	1m 12s
Wheelhouse for windows-latest and 3.11	1m 45s
Test 3.8 with ubuntu-latest	10m 43s
Test 3.9 with ubuntu-latest	8m 2s
Test 3.10 with ubuntu-latest	8m 34s
Test 3.11 with ubuntu-latest	8m 13s
Teams notify on failure	0s
Build library	24s
Release	0s
Deploy development documentation	0s
Deploy stable documentation	0s
	1h 59m 28s

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