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/dratini.asm

@@ -1,10 +1,10 @@
-; DratiniPokedexEntry: ; 0x1cc761
 	db "DRAGON@" ; species name
 	dw 511, 70 ; height, weight
 
 	db   "It sheds many lay-"
 	next "ers of skin as it"
 	next "grows larger. Dur-"
+
 	page "ing this process,"
 	next "it is protected by"
 	next "a rapid waterfall.@"