Updated warning message

UOP1_Project/Assets/Scripts/Editor/GameSceneEditor.cs

 {
     #region UI_Warnings
 
-    private const string noScenesWarning = "There are no scenes set for this level yet! Add a new scene with the dropdown above";
+    private const string noScenesWarning = "There are no scenes set for this level yet! Add a new scene with the dropdown below";
     
     #endregion