third commit

app.py

@@ -104,7 +104,7 @@ def sepia(input_img):
 demo = gr.Interface(fn=sepia,
                     inputs=gr.Image(shape=(400, 600)),
                     outputs=['plot'],
-                    examples=["city_1", "city_2", "city_3", "city_4", "city_5"],
+                    examples=["city_1.png", "city_2.png", "city_3.png", "city_4.png", "city_5.png"],
                     allow_flagging='never')