add warning disclaimer

app.py

@@ -96,6 +96,8 @@ st.subheader("Leverage the power of storytelling for any idea. 💡")
 with st.expander(label="How to present your idea to get the best story 👇", expanded=True):
     st.markdown(_explanations)
 
+st.warning("If you get an error while generating a story while the input is valid, please try again, we might have a temporary rate limit.")
+
 input_col, btn_col =  st.columns([3, 1], vertical_alignment="bottom")
 with input_col:
     input_str = st.text_area("Your idea that needs a story", "", placeholder="I need a pitch for ...")