Doc and comment fixes from #4167 #20776

Job	Run time
linting	2m 22s
build (self-hosted, stable)	1h 30m 26s
build (macos-latest, 1.75.0)	1m 2s
build (windows-latest, stable)	2h 9m 18s
benchmark	16m 46s
build (self-hosted, beta)	1h 33m 31s
rustfmt	15s
build (self-hosted, 1.75.0)	1m 12s
build (macos-latest, stable)	1h 28m 55s
build-tx-sync (ubuntu-latest, 1.75.0)	5m 32s
build-tx-sync (macos-latest, stable)	6m 39s
ext-test	5m 30s
build-tx-sync (macos-latest, 1.75.0)	7m 22s
coverage	23m 41s
check_release	2m 23s
check_docs	6m 12s
build-tx-sync (ubuntu-latest, stable)	5m 1s
build-tx-sync (ubuntu-latest, beta)	5m 19s
build-tx-sync (macos-latest, beta)	7m 5s
fuzz	27m 27s
	8h 45m 58s

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