The question that prompted mine is What should I do when Ubuntu freezes?. the tag in question is system-managment which I would never find is I was looking for questions regarding system-management. I have reviewed Can misspelled tags be deleted? and Renaming a misspelled tag? / Rep requirement for synonym suggestions?
Or drop by in chat. BTW, that question is Community Wikify'ed, so anyone with 100 reputation can edit it without revision and you only need 300 rep to create a tag.
Flag the question for moderator attention is my best guess.