Fix external links with anchors being rewritten as relative doc links #1965

Job	Run time
lint	28s
old-dependencies	37s
test (ubuntu-latest, 3.14.0, --cov-fail-under=100)	42s
test (ubuntu-latest, 3.12.11)	41s
test (ubuntu-latest, 3.11.13)	44s
test (windows-latest, 3.14.0, --cov-fail-under=100)	34s
test (ubuntu-latest, 3.13.7)	43s
test (ubuntu-latest, 3.10.18)	44s
test (macos-latest, 3.14.0, --cov-fail-under=100)	44s
build / build	21s
attest	0s
check / check	5s
deploy	0s
	6m 23s

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