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/stantler.asm

@@ -1,10 +1,10 @@
-; StantlerPokedexEntry: ; 0x1d1174
 	db "BIG HORN@" ; species name
 	dw 407, 1570 ; height, weight
 
 	db   "The round balls"
 	next "found on the"
 	next "fallen antlers can"
+
 	page "be ground into a"
 	next "powder that aids"
 	next "in sleeping.@"