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/bellsprout.asm

@@ -1,10 +1,10 @@
-; BellsproutPokedexEntry: ; 0x1b81a1
 	db "FLOWER@" ; species name
 	dw 204, 90 ; height, weight
 
 	db   "If it notices"
 	next "anything that"
 	next "moves, it"
+
 	page "immediately flings"
 	next "its vine at the"
 	next "object.@"