How do I report a spam user or community?

So I just came across a community being used to solicit fake Amazon reviews. But I don't see a way to report this to the admins. Since the user in question moderates the community they are posting spam to, it seems like the report button will just go to them?

https://lemmy.world/c/amazonreviewerclub

Edit: seems to be gone now, perhaps reporting one of the posts was enough. Not sure what that looks like on the admin interface.