That's probably fine. They just don't want like.... nazi romhacks, porn, etc. Racism/sexism/homophobia/etc. are all probably off limits. But just some cursing is probably fine. At least, that's how I end up reading those kinds of rules. But I ain't a mod here so it might be best to ask? I imagine if it's already in some sort of base game, it's probably fine. And lots of games rated T or M definitely have cursing.