SERIES FINALE: ABC hasn’t announced a renewal for this four-week, eight-episode limited series – and based on the ratings, isn’t likely to. But this series has had its moments, and its clever musical numbers (for example, “Weird Al” Yankovic and a group of hooded clerics singing “Hey, hey, we’re the Monks”) – and if tonight’s episode is indeed the last round for Galavant, at least it’ll go down singing…