https://hibernate.org/orm/documentation/getting-started/ contains some 404 links like https://developer.jboss.org/wiki/MavenRepository .

The link to the snapshot repository https://repository.jboss.org/nexus/content/repositories/snapshots/org/hibernate/ is wrong or publishing snapshots no longer works. The latest snapshot is 6.0.0-SNAPSHOT. There are no new snapshots under https://repository.jboss.org/nexus/content/repositories/snapshots/org/hibernate/orm/ either.