Gracken/doc

• We don't know how it looks either. Or at least until more recent versions changed it, at least clarifying it to be humanoid. Most of the official tilesets follow this interpretation as well.
• Despite it being a strong fighter, it is not aggressive and will always ignore the player as long as they leave it alone, therefore, attacking it is a waste of time and not needed, since Grackens are found near corpses, one can get a lot of good loot when they find them, so encountering a Gracken can be a good thing most of the time.