Fix app.py

app.py

@@ -40,6 +40,7 @@ st.markdown("Search papers from [HF daily papers](https://huggingface.co/papers)
 user_query = st.text_input("Search anything...")
 if st.button('→'):
     results = retriever.invoke(user_query)
+    st.text("hit {len(results)} papers")
 
     for result in results:
         with st.expander(label=result.metadata['title'], expanded=False):