Fix the "Displacement Mapping With Depth Offset" setup

SampleScenes/HDTest/HDRenderLoopTest.unity

   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 122368350}
   m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
-  m_LocalPosition: {x: -6.918895, y: 15.827157, z: 12.172683}
+  m_LocalPosition: {x: -10, y: 0.25, z: 0}
   m_LocalScale: {x: -1, y: 1, z: 1}
   m_Children: []
   m_Father: {fileID: 874252442}
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 874252441}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 4, y: -15, z: -25}
+  m_LocalPosition: {x: 10, y: 0, z: -14}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
   - {fileID: 1950745466}
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 885480687}
   m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
-  m_LocalPosition: {x: 3.0811052, y: 15.577157, z: 12.172683}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []
   m_Father: {fileID: 874252442}
   m_PrefabParentObject: {fileID: 0}
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1950745465}
-  m_LocalRotation: {x: 0.0125774685, y: 0.9800875, z: -0.18686625, w: 0.0659644}
-  m_LocalPosition: {x: -1.9188948, y: 17.577156, z: 12.172683}
-  m_LocalScale: {x: 20, y: 12.000023, z: 1}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: -5, y: 2, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []
   m_Father: {fileID: 874252442}
   m_RootOrder: 0