Updated Anchors scene to fix plane discorvery setting.

Assets/Scenes/Anchors.unity

   m_EditorClassIdentifier: 
   m_PlanePrefab: {fileID: 1568414836858200, guid: f0e0be81472ff1243aa2afa27e5d0e61,
     type: 3}
-  m_DetectionMode: -1
+  m_DetectionMode: 0
 --- !u!114 &1335839538
 MonoBehaviour:
   m_ObjectHideFlags: 0

ProjectSettings/EditorBuildSettings.asset

     path: Assets/Scenes/UX/SampleUXScene.unity
     guid: 3b42d67a72bbc4004bf713db0e312326
   - enabled: 0
-    path: Assets/Scenes/ReferencePoints.unity
+    path: Assets/Scenes/Anchors.unity
     guid: 5cba9114a192a46a7aef31da62316e39
   - enabled: 0
     path: Assets/Scenes/Plane Detection/PlaneClassification.unity