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/weepinbell.asm

@@ -1,10 +1,10 @@
-; WeepinbellPokedexEntry: ; 0x1b81fd
 	db "FLYCATCHER@" ; species name
 	dw 303, 140 ; height, weight
 
 	db   "When it's hungry,"
 	next "it swings its"
 	next "razor-sharp"
+
 	page "leaves, slicing up"
 	next "any unlucky object"
 	next "nearby for food.@"