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/vulpix.asm

@@ -1,10 +1,10 @@
-; VulpixPokedexEntry: ; 0x18259b
 	db "FOX@" ; species name
 	dw 200, 220 ; height, weight
 
 	db   "As its body grows"
 	next "larger, its six"
 	next "warm tails become"
+
 	page "more beautiful,"
 	next "with a more luxur-"
 	next "ious coat of fur.@"