Did I [do the right thing]?
From your description of the question, (irrelevant, screenshot now in question) yes. "Looks OK" was the correct action. It also probably shouldn't have been closed. (Disclaimer: I can't actually see the question; from your description, it could possibly be off-topic for "typographical error".) (irrelevant, screenshot now in question)
Copying from here:
For example, in Triage, clarify a few things:
- It is completely okay to both downvote and review "Looks OK" on the same question.
- "Requires Editing" should only be used if a decent edit could be made by 2K users, not the OP.