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/raichu.asm

@@ -1,10 +1,10 @@
-; RaichuPokedexEntry: ; 0x182117
 	db "MOUSE@" ; species name
 	dw 207, 660 ; height, weight
 
 	db   "If its electric"
 	next "pouches run empty,"
 	next "it raises its tail"
+
 	page "to gather electri-"
 	next "city from the"
 	next "atmosphere.@"