Consistent constants for radio data table sizes (could still be better)

data/items/buena_prizes.asm

@@ -1,5 +1,5 @@
 BuenaPrizeItems:
-; there are NUM_BUENA_PRIZES items (see engine/events/buena.asm)
+; there are NUM_BUENA_PRIZES entries
 	db ULTRA_BALL,   2
 	db FULL_RESTORE, 2
 	db NUGGET,       3
@@ -9,4 +9,3 @@ BuenaPrizeItems:
 	db CARBOS,       5
 	db CALCIUM,      5
 	db HP_UP,        5
-.End

data/radio/oaks_pkmn_talk_routes.asm

@@ -1,6 +1,7 @@
 ; Oak's Pokémon Talk will list wild Pokémon on these maps.
 
 OaksPKMNTalkRoutes:
+; there are NUM_OAKS_POKEMON_TALK_ROUTES entries
 	map_id ROUTE_29
 	map_id ROUTE_46
 	map_id ROUTE_30
@@ -16,4 +17,3 @@ OaksPKMNTalkRoutes:
 	map_id ROUTE_45
 	map_id ROUTE_36
 	map_id ROUTE_31
-.End