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/bellossom.asm

@@ -1,10 +1,10 @@
-; BellossomPokedexEntry: ; 0x1cd69a
 	db "FLOWER@" ; species name
 	dw 104, 130 ; height, weight
 
 	db   "When these dance"
 	next "together, their"
 	next "petals rub against"
+
 	page "each other,"
 	next "making pretty,"
 	next "relaxing sounds.@"