Update app.py

app.py

@@ -36,7 +36,7 @@ def launch_bot():
     with st.sidebar:
         image = Image.open('Vectara-logo.png')
         st.markdown(f"## Welcome to {cfg.title}\n\n"
-                    f"With this demo uses Retieval Augmented Generation to ask questions about {cfg.source_data_desc}\n\n")
+                    f"With this demo uses Retrieval Augmented Generation to ask questions about {cfg.source_data_desc}\n\n")
 
         st.markdown("---")
         st.markdown(