chore: Update usecase README.md (#2396)

Co-authored-by: Wendong <[email protected]>

Author: 1sarthakbhardwaj

examples/usecases/chat_with_github/README.md

@@ -1,4 +1,3 @@
-````markdown
 # 🤖 GitHub Repo Chat Explorer
 
 A Streamlit-based chat interface powered by **CAMEL-AI** and **MCP (Model Context Protocol)** that lets you conversationally explore any GitHub repository. Ask questions like "How many files?", "Show me the README contents", or follow-up queries—all in context of the chosen repo.
@@ -108,9 +107,7 @@ Gitingest/
 ├── app.py              # Main Streamlit chat app
 ├── requirements.txt    # Python dependencies
 └── .env                # Env vars
-```
 
----
 
 *Happy repo chatting!*  
 ````