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/poliwrath.asm

@@ -1,10 +1,10 @@
-; PoliwrathPokedexEntry: ; 0x183066
 	db "TADPOLE@" ; species name
 	dw 403, 1190 ; height, weight
 
 	db   "It can use its"
 	next "well-developed"
 	next "arms and legs to"
+
 	page "run on the surface"
 	next "of the water for a"
 	next "split second.@"