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/gyarados.asm

@@ -1,10 +1,10 @@
-; GyaradosPokedexEntry: ; 0x1cc065
 	db "ATROCIOUS@" ; species name
 	dw 2104, 5180 ; height, weight
 
 	db   "It appears when-"
 	next "ever there is"
 	next "world conflict,"
+
 	page "burning down any"
 	next "place it travels"
 	next "through.@"