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/parasect.asm

@@ -1,10 +1,10 @@
-; ParasectPokedexEntry: ; 0x1829e2
 	db "MUSHROOM@" ; species name
 	dw 303, 650 ; height, weight
 
 	db   "When nothing's"
 	next "left to extract"
 	next "from the bug, the"
+
 	page "mushrooms on its"
 	next "back leave spores"
 	next "on the bug's egg.@"