modify the default value in demo.

app.py

@@ -166,7 +166,7 @@ with block:
             
             with gr.Accordion("Shared Advanced Options", open=False):  
                 with gr.Row():
-                    shared_num_samples = gr.Slider(label="Images", minimum=1, maximum=12, value=1, step=1)  
+                    shared_num_samples = gr.Slider(label="Images", minimum=1, maximum=12, value=3, step=1)  
                     shared_image_resolution = gr.Slider(label="Image Resolution", minimum=256, maximum=768, value=512, step=64, visible=False)  
                     shared_strength = gr.Slider(label="Control Strength", minimum=0.0, maximum=2.0, value=1.0, step=0.01, visible=False)  
                     shared_guess_mode = gr.Checkbox(label='Guess Mode', value=False, visible=False)