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/vaporeon.asm

@@ -1,10 +1,10 @@
-; VaporeonPokedexEntry: ; 0x1cc224
 	db "BUBBLE JET@" ; species name
 	dw 303, 640 ; height, weight
 
 	db   "As it uses the"
 	next "fins on the tip"
 	next "of its tail to"
+
 	page "swim, it blends"
 	next "with the water"
 	next "perfectly.@"