Update app.py

app.py

@@ -43,7 +43,7 @@ def launch_bot():
             "## How this works?\n"
             "This app was built with [Vectara](https://vectara.com).\n"
             "Vectara's [Indexing API](https://docs.vectara.com/docs/api-reference/indexing-apis/indexing) was used to ingest the data into a Vectara corpus (or index).\n\n"
-            "This app uses Vectara Chat API to query the corpus and present the results to you, answering your question.\n\n"
+            "This app uses Vectara [Chat API](https://docs.vectara.com/docs/console-ui/vectara-chat-overview) to query the corpus and present the results to you, answering your question.\n\n"
         )
         st.markdown("---")
         st.image(image, width=250)