Like the one I did here: fix(curriculum): Additional clarification in hint by Etkesmeci · Pull Request #44746 · freeCodeCamp/freeCodeCamp · GitHub or should I explain it again in the pull request?
I can’t speak to what the FCC policy is, other than what is in the various readmes.
I would perhaps at least want to put a brief explanation. If it is a complex explanation, I might give a brief explanation and then link to the issue for more details. But maybe that is just me.