Updating the path to the SimpleAR scene.

ProjectSettings/EditorBuildSettings.asset

     path: Assets/Scenes/Scale.unity
     guid: 13ac91f677dc22f4ca320ef8ae727b68
   - enabled: 0
-    path: Assets/Scenes/SimpleAR.unity
+    path: Assets/Scenes/SimpleAR/SimpleAR.unity
     guid: 99c9720ab356a0642a771bea13969a05
   - enabled: 0
     path: Assets/Scenes/UX/SampleUXScene.unity