go simple nested list for examples

app.py

@@ -10,18 +10,16 @@ before = gr.Image(label="Before")
 after = gr.Image(label="After")
 diff = gr.Image(label="Difference")
 
-examples = gr.Examples(examples=[
-                   ["examples/Office_ShadowAcne/reference.png",
-                    "examples/Office_ShadowAcne/test.png"]
-                ],
-                inputs=[before, after]
-                      )
+examples = [
+    ["examples/Office_ShadowAcne/reference.png",
+    "examples/Office_ShadowAcne/test.png"]
+            ]
 
 demo = gr.Interface(
     fn=compute_diff,
     inputs=[before, after],
     outputs=[diff],
-    # examples=examples
+    examples=examples
 )