Update app.py

app.py

@@ -101,5 +101,5 @@ with tab2:
             st.warning("Please enter a valid input.")
 
 
-st.sidebar.title("References")
+st.sidebar.title("Reference")
 st.sidebar.markdown("1. [LangGraph Tool Calling](https://github.com/aritrasen87/LLM_RAG_Model_Deployment/blob/main/LangGraph_02_ToolCalling.ipynb)")