Update app.py

app.py

@@ -204,7 +204,7 @@ article_dict, clusters = initialize(LIMIT, USE_CACHE)
 st.title("Welcome to TopicDig!")
 st.success(f"You select the topics, we summarize the relevant news and show you a digest, plus some info to help contextualize what the machine did.")
 
-st.warning("Enjoy, and remember, this software is experimental, and honestly may produce untrue summaries.  For more information on truthfulness and automatic summarization with transformers see TK.")
+st.warning("Enjoy, and remember, this software is experimental, and may produce untrue summaries.  For more information on truthfulness and automatic summarization with transformers see https://arxiv.org/abs/2109.07958.")
 
 st.subheader(f"How it works:")
 st.write(f"""Select 1 to 3 topics from the drop down menus and click 'submit' to start generating your digest!""")