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/piloswine.asm

@@ -1,10 +1,10 @@
-; PiloswinePokedexEntry: ; 0x1d0c01
 	db "SWINE@" ; species name
 	dw 307, 1230 ; height, weight
 
 	db   "Although its legs"
 	next "are short, its"
 	next "rugged hooves"
+
 	page "prevent it from"
 	next "slipping, even on"
 	next "icy ground.@"