RENAME: Dragonrider

There are two character pages that have the exact same name, "Dragonrider", but refer to two different boss battles in Dark Souls II.

http://www.giantbomb.com/dragonrider/3005-33087/

This should be renamed to "Dragonriders" to be more accurate since this battle in a different location features two Dragonriders, and to more easily distinguish this page from the other.

@josephknows: Character pages are for singular, unique individuals. If these "Dragonriders" don't have names, then it should be a concept page for the group.