Fix doc build error (#1221) #1014

Job	Run time
docs	1m 36s
Rust unit tests (ubuntu-latest)	2m 36s
lint	1m 29s
Rust unit tests (macos-latest)	2m 17s
Rust unit tests (windows-latest)	5m 13s
test (macos-latest, 3.9)	4m 0s
typecheck	1m 25s
test (macos-latest, 3.10)	3m 49s
test (macos-latest, 3.11)	3m 57s
Rustfmt	4s
test (macos-latest, 3.12)	4m 35s
test (macos-latest, 3.13)	5m 6s
test (ubuntu-latest, 3.9)	5m 44s
test (ubuntu-latest, 3.10)	5m 59s
test (ubuntu-latest, 3.11)	6m 26s
test (ubuntu-latest, 3.12)	8m 42s
test (ubuntu-latest, 3.13)	8m 58s
test (windows-latest, 3.9)	8m 39s
test (windows-latest, 3.10)	10m 19s
test (windows-latest, 3.11)	9m 18s
test (windows-latest, 3.12)	10m 40s
test (windows-latest, 3.13)	11m 6s
	2h 1m 58s

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