MLP:FiM reverse alias

BUR #11354 has been approved by @nonamethanks.

create alias my_little_pony_friendship_is_magic -> my_little_pony:_friendship_is_magic

Extremely tiny change, but the colon is officially part of the title (https://en.wikipedia.org/wiki/My_Little_Pony:_Friendship_Is_Magic). Might as well reflect that here.

Seems this was done in topic #6616, I assume because the official logo does not have a colon. However the colon seems to be used in every instance of published media that I could find. Even Netflix uses it, and all sources not using it seem to be unofficial.

The bulk update request #11354 (forum #217324) has been approved by @nonamethanks.