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/chikorita.asm

@@ -1,10 +1,10 @@
-; ChikoritaPokedexEntry: ; 0x1cc988
 	db "LEAF@" ; species name
 	dw 211, 140 ; height, weight
 
 	db   "It loves to bask"
 	next "in the sunlight."
 	next "It uses the leaf"
+
 	page "on its head to"
 	next "seek out warm"
 	next "places.@"