create alias coveralls -> jumpsuit
The jumpsuit wiki lists "coveralls" as an alternative name for jumpsuits.
Although Wikipedia says covralls are "like a jumpsuit, but usually less tight-fitting," that distinction isn't important when it comes to tagging on Danbooru.
EDIT: The tag alias coveralls -> jumpsuit (forum #148641) has been approved by @Hillside_Moose.
Updated by a moderator