Phantom Horse Name Fix

With update 1. 3, amongst a slew of other additions and changes Warhorse added The Executioner's Pride, through which you could claim a new, all black horse. Unlike most other horses that you can find or buy, the Phantom Horse had a story behind it- this alone, at least in my opinion, raises it to the level of Pebbles and Herring. The horse is called "Ashborne" multiple times throughout the quest, yet when we get the change to interreact with the horse, it's name is just "Phantom Horse", and it remains like this even if you choose to claim it. This small mod fixes that, making the new horse consistent with it's other four-legged comrades by having it go by it's own name.