Update app.py

app.py

@@ -49,7 +49,7 @@ if KaggleX_courses_db :
         st.session_state['ai_history'] = ["Hello ! Ask me anything about KaggleX courses!"]
 
     if 'user_history' not in st.session_state:
-        st.session_state['user_history'] = ["I would like to know more about the KaggleX courses!]
+        st.session_state['user_history'] = ["I would like to know more about the KaggleX courses!"]
 
     #container for the chat history
     response_container = st.container()