Update app.py

app.py

@@ -123,8 +123,13 @@ def infer(image, candidate_labels):
 with gr.Blocks() as demo:
     gr.Markdown("# FG-CLIP Retrieval")
     gr.Markdown(
+        
         "This app uses the FG-CLIP model (qihoo360/fg-clip-base) for retrieval on CPU :"
     )
+    gr.Markdown(
+        "(Run Densefeature) only support only one class!"
+    )
+    
     with gr.Row():
         with gr.Column():
             image_input = gr.Image(type="pil")