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/clefairy.asm

@@ -1,10 +1,10 @@
-; ClefairyPokedexEntry: ; 0x1824c8
 	db "FAIRY@" ; species name
 	dw 200, 170 ; height, weight
 
 	db   "Though rarely"
 	next "seen, it becomes"
 	next "easier to spot,"
+
 	page "for some reason,"
 	next "on the night of a "
 	next "full moon.@"