[APPROVED] Update fan-made giant_otter_(kemono_friends) to have creator's name

mass update giant_otter_(kemono_friends) -> giant_otter_(kemono_friends)_(kuro_(kurojill))

Link to request

Following the way the other fan-made original Kemono Friends characters are named.

EDIT: The bulk update request #1679 (forum #147200) has been approved by @Hillside_Moose.

The bulk update request #1679 (forum #147200) has been approved by @Hillside_Moose.