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/scyther.asm

@@ -1,10 +1,10 @@
-; ScytherPokedexEntry: ; 0x1b9851
 	db "MANTIS@" ; species name
 	dw 411, 1230 ; height, weight
 
 	db   "It's very proud of"
 	next "its speed. It"
 	next "moves so fast that"
+
 	page "its opponent does"
 	next "not even know what"
 	next "knocked it down.@"