Update app.py

app.py

@@ -160,7 +160,7 @@ st.markdown("""
 
 with st.expander("How can I use this space?"):
     st.markdown("""
-    This space is created based on steps described in [this Medium article](https://medium.com/towards-data-science/using-llama-3-for-building-ai-agents-7e74f79d1ccc). To use this space:
+    This space is created based on steps described in [this Medium article](https://towardsdatascience.com/building-llm-powered-coding-assitant-for-github-b88beeb42f2d). To use this space:
     
     1. Create a Redis Cloud account and set up a database
     2. Add your Redis credentials to this space