Among the 600+ hooks in core/core-api, currently only two lack the 'Hook' suffix in their names.
This causes their doc link to fail on mediawiki.org, because Template:MediaWikiHook has hardcoded the suffix.
- https://www.mediawiki.org/wiki/Manual:Hooks/GetBlockErrorMessageKey
- https://www.mediawiki.org/wiki/Manual:Hooks/ParserModifyImageHTML
There should be a test or sniff to enforce this, lest more stuff breaks unexpectedly.