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/haunter.asm

@@ -1,10 +1,10 @@
-; HaunterPokedexEntry: ; 0x1b8bbd
 	db "GAS@" ; species name
 	dw 503, 2 ; height, weight
 
 	db   "It hides in the"
 	next "dark, planning to"
 	next "take the life of"
+
 	page "the next living"
 	next "thing that wanders"
 	next "close by.@"