edit: it breaks rule 3 as the formatting defined in the formatting syntax section cant be applied to instances. This is because an instance isnt a community. And because of that, we know that this community isnt for instances.
Damn not sure why people are downvoting you, it was an honest mistake, and you're absolutely right that it wasn't in the rules before they got changed literally because of your comment. If you do not browse here often and get a feel for what's acceptable, or you are just not great at picking up on vibes… I could definitely imagine doing the same thing. I get not upvoting because posting this here definitely would tacitly be allowed and now it's explicitly allowed, but…