Clean up comments

Base data: types uniquely lacked a comment; items on one line; distinguish unknowns
Dex entries: don't imply that pointers don't exist

data/pokemon/dex_entries/hoothoot.asm

@@ -1,10 +1,10 @@
-; HoothootPokedexEntry: ; 0x1cce58
 	db "OWL@" ; species name
 	dw 204, 470 ; height, weight
 
 	db   "It begins to hoot"
 	next "at the same time"
 	next "every day. Some"
+
 	page "trainers use them"
 	next "in place of"
 	next "clocks.@"