Docs: add missing hook cross-reference comments #33187

Job	Run time
Determine Matrix	5s
Multisite Memcached / Test before	15m 10s
Multisite Memcached / Test current	14m 10s
Single Site Default / Test before	15m 15s
Multisite Default / Test current	14m 14s
Multisite Default / Test before	15m 14s
Single Site Memcached / Test current	15m 29s
Single Site Default / Test current	15m 27s
Single Site Memcached / Test before	14m 56s
Compare / Multisite Memcached	20s
Compare / Single Site Default	24s
Compare / Single Site Memcached	18s
Compare / Multisite Default	24s
Failed workflow tasks	-1s
Slack Notifications	-1s
	2h 1m 24s

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