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/igglybuff.asm

@@ -1,10 +1,10 @@
-; IgglybuffPokedexEntry: ; 0x1cd32c
 	db "BALLOON@" ; species name
 	dw 100, 20 ; height, weight
 
 	db   "Instead of walking"
 	next "with its short"
 	next "legs, it moves"
+
 	page "around by bouncing"
 	next "on its soft,"
 	next "tender body.@"