Repository navigation

ci: pin site-link-validator to 0.2.5 and fix broken doc links #6541

Job	Run time
Check / Tests (scala3)	55m 19s
Java 21 Extra Tests	2m 4s
Pekko Classic Remoting Tests (cluster/test distributed-data/test cluster-tools/test cluster-metri...	10m 5s
Check / Tests (next)	55m 59s
Check / Code Style	3m 22s
Check / Tests (scala213)	1h 1m 22s
	3h 8m 11s