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/zapdos.asm

@@ -1,10 +1,10 @@
-; ZapdosPokedexEntry: ; 0x1cc697
 	db "ELECTRIC@" ; species name
 	dw 503, 1160 ; height, weight
 
 	db   "Legendary bird"
 	next "#MON. They say"
 	next "lightning caused"
+
 	page "by the flapping of"
 	next "its wings causes"
 	next "summer storms.@"