Update README_Dialog.md

The dialog has been moved to a different folder.

Author: cihankurt98

Documentation/README_Dialog.md

@@ -5,7 +5,7 @@ Dialog controls are UI overlays that provide contextual app information. They of
 
 ## Example scene
 You can find examples in the **DialogExample** scene under:
-[MRTK/Examples/Experimental/Dialog](https://github.com/microsoft/MixedRealityToolkit-Unity/tree/mrtk_development/Assets/MRTK/SDK/Experimental/Dialog)
+[MRTK/Examples/Demos/UX/Dialog](https://github.com/microsoft/MixedRealityToolkit-Unity/tree/mrtk_development/Assets/MRTK/Examples/Demos/UX/Dialog)
 
 ## How to use Dialog control
 MRTK provides three Dialog prefabs: 
@@ -29,4 +29,4 @@ Dialog.Open(DialogPrefabLarge, DialogButtonType.OK, "Confirmation Dialog, Large,
 Dialog.Open(DialogPrefabSmall, DialogButtonType.Yes | DialogButtonType.No, "Confirmation Dialog, Small, Far", "This is an example of a small dialog with a choice message, placed at near interaction range", true);
 ```
 
-For more details, please see `DialogExampleController.cs` in DialogExample.unity scene.
+For more details, please see `DialogExampleController.cs` in DialogExample.unity scene.