Changing Map Names in Votemap?

I have this votemap called Fretta Vote (http://www.garrysmod.org/downloads/?a=view&id=102763) but I can’t figure out how to change the names of my maps for the vote map. They just show up as like ttt_dolls or ttt_assualt for example. How do I make it so it only shows “Dolls” or “Assualt”