Add subheader

Signed-off-by: Jagadish Krishnamoorthy <jkrishna@amd.com>

app.py

@@ -11,6 +11,7 @@ from langchain.chains import create_retrieval_chain
 
 default_url = "https://rocm.docs.amd.com/en/latest/what-is-rocm.html"
 st.title("URL Loader")
+st.subheader("Stack used: LangChain, FaissDB for RAG, Streamlit, OpenAI LLM - by https://github.com/jaglinux", divider='rainbow')
 
 embeddings = OpenAIEmbeddings()