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/slowking.asm

@@ -1,10 +1,10 @@
-; SlowkingPokedexEntry: ; 0x1d0292
 	db "ROYAL@" ; species name
 	dw 607, 1750 ; height, weight
 
 	db   "Every time it ya-"
 	next "wns, SHELLDER"
 	next "injects more poi-"
+
 	page "son into it. The"
 	next "poison makes it"
 	next "more intelligent.@"