Update app.py

app.py

@@ -102,9 +102,9 @@ with gr.Blocks(theme=gr.themes.Monochrome()) as demo:
             gallery = gr.Gallery(label="Retrieved images", 
                                  show_label=True, preview=True, 
                                  object_fit="contain", 
-                                 value=[(sample_1, 'sample image'),
-                                        (sample_2, 'sample image'), 
-                                        (sample_3, 'sample image')])
+                                 value=[(sample_1, 'sample image 1'),
+                                        (sample_2, 'sample image 2'), 
+                                        (sample_3, 'sample image 3')])
             query = gr.Textbox(label="Enter query")
             button = gr.Button(value="Retrieve images")
             button.click(img_retrieve, [query, doc_label], gallery)