Refactor code structure for improved readability and maintainability

custom_sentences/en/media.yaml

@@ -12,10 +12,10 @@ lists:
       - in: "front room"
         out: "media_player.front_room_hub"
       - in: "master bedroom"
-        out: "media_player.master_bedroom_clock"
+        out: "media_player.bedroom_hub"
       - in: "downstairs"
         out: "media_player.computer_area_hub"
   volume:
     range:
       from: 0
-      to: 100
+      to: 100