Fixed Map Zone DB Documentation

Added missing description on CLONE and MOB_BOSS target types, special thanks to frenzmu06!
http://hercules.ws/board/topic/302-introducing-hercules-map-zone-database/?p=3508
Also fixed map zone  target type "All" to include "mob_boss" and "clone"

Signed-off-by: shennetsind <ind@henn.et>