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/sneasel.asm

@@ -1,10 +1,10 @@
-; SneaselPokedexEntry: ; 0x1d097a
 	db "SHARP CLAW@" ; species name
 	dw 211, 620 ; height, weight
 
 	db   "This cunning"
 	next "#MON hides"
 	next "under the cover"
+
 	page "of darkness,"
 	next "waiting to attack"
 	next "its prey.@"