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/ursaring.asm

@@ -1,10 +1,10 @@
-; UrsaringPokedexEntry: ; 0x1d0a41
 	db "HIBERNANT@" ; species name
 	dw 511, 2770 ; height, weight
 
 	db   "Although it has a"
 	next "large body, it is"
 	next "quite skilled at"
+
 	page "climbing trees. It"
 	next "eats and sleeps in"
 	next "the treetops.@"