Fix 'City' Instance Label bug, thus fixing instance res exploit

Multiple instances (including BRD, MC, DM and more) were labelled "City" in /who and guild tab etc. ever since 6251b3b
This caused the game to not find any graveyards to teleport the players ghost to, thus meaning the ghost spawned at the player and you could essentially die and move in ghost form to the end of an instance. Fix accredited to https://github.com/Neotmiren for the comment at the bottom of the commit.