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/oddish.asm

@@ -1,10 +1,10 @@
-; OddishPokedexEntry: ; 0x182836
 	db "WEED@" ; species name
 	dw 108, 120 ; height, weight
 
 	db   "During the day, it"
 	next "stays in the cold"
 	next "underground to"
+
 	page "avoid the sun."
 	next "It grows by bath-"
 	next "ing in moonlight.@"