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/bayleef.asm

@@ -1,10 +1,10 @@
-; BayleefPokedexEntry: ; 0x1cc9e9
 	db "LEAF@" ; species name
 	dw 311, 350 ; height, weight
 
 	db   "The scent that"
 	next "wafts from the"
 	next "leaves on its neck"
+
 	page "causes anyone who"
 	next "smells it to"
 	next "become energetic.@"