Update app.py

app.py

@@ -161,7 +161,7 @@ with gr.Blocks(css=css) as MaskSuggest:
             gr.Markdown("### Step 2. Upload a mask image")
             mask_img_input = gr.Image(label="Mask image (PNG with transparency)", type="pil")
             mask_img_example = gr.Examples(
-                examples=["mask1.jpg", "mask2.png", "mask3.png"],
+                examples=["mask1.jpg", "mask2.jpg", "mask3.png"],
                 inputs=mask_img_input,
                 examples_per_page=12
             )