Update app.py

app.py

@@ -26,8 +26,8 @@ if __name__ == "__main__":
         # call the chunk size mehtod that sets the number
         chunk_size = st.number_input('Chunk size:', min_value=100, max_value=2048, value=512, on_change=clear_history)
 
-        # input the k number, a hight nuber will increase the search effectiveness, but is more expensive
-        k = st.number_input('k', min_value=1, max_value=20, value=3, on_change=clear_history)
+        # input the top-k number, k increase the search effectiveness, but is more expensive
+        k = st.number_input('top-k most salient docs', min_value=1, max_value=20, value=3, on_change=clear_history)
 
         # click this sidebard button to add data
         add_data = st.button('Add Data', on_click=clear_history)