Fixed lit and layered lit shaders GUI binding (was wrong because of namespace changes)

Assets/ScriptableRenderLoop/HDRenderPipeline/Material/LayeredLit/LayeredLit.shader

         }
     }
 
-	CustomEditor "Experimental.ScriptableRenderLoop.LayeredLitGUI"
+	CustomEditor "Experimental.Rendering.HDPipeline.LayeredLitGUI"
 }

Assets/ScriptableRenderLoop/HDRenderPipeline/Material/Lit/Lit.shader

         }
     }
 
-    CustomEditor "Experimental.ScriptableRenderLoop.LitGUI"
+    CustomEditor "Experimental.Rendering.HDPipeline.LitGUI"
 }