Click on the little “edit” icon while viewing your community. In the actual editing menu, there is a text field in the upper right corner called “Display Name”. You should be able to fix any typos in that field, but keep in mind that the site currently lags a bit and it might take a while until the changes actually happen after you clicked on the “save” button.

On an unrelated note, would it be ok for you if I link your community in my “intro” post? I recently created a community for Breath of the Wild and would like to be able to redirect people to “related” subs ;)