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/jumpluff.asm

@@ -1,10 +1,10 @@
-; JumpluffPokedexEntry: ; 0x1cd998
 	db "COTTONWEED@" ; species name
 	dw 207, 70 ; height, weight
 
 	db   "Even in the fierc-"
 	next "est wind, it can"
 	next "control its fluff"
+
 	page "to make its way to"
 	next "any place in the"
 	next "world it wants.@"