Demo video updated (#3)

This pull request includes a small update to the `README.md` file. The
change updates the video source URL to a new link.

*
[`README.md`](diffhunk://#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5L21-R21):
Updated the video source URL to
`https://github.com/user-attachments/assets/ff760b5f-7f0c-4b94-a3ca-1b55283bddd4`.Demo
video updated

Author: shahariaazam

README.md

@@ -18,7 +18,7 @@ This repository is part of [mcp-kit](https://github.com/shaharia-lab/mcp-kit) an
 
 Experience MCP Kit in action - chat with LLMs while leveraging additional capabilities provided by the MCP server:
 
-<video src="https://github.com/user-attachments/assets/81804a29-e896-4f65-a929-05ac6a6aa92a" controls title="MCP Kit in action"></video>
+<video src="https://github.com/user-attachments/assets/ff760b5f-7f0c-4b94-a3ca-1b55283bddd4" controls title="MCP Kit in action"></video>
 
 ## 🛠️ Prerequisites
 
@@ -131,4 +131,4 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 ## 🙏 Acknowledgments
 
 - The MCP Kit community
-- All our contributors and supporters
+- All our contributors and supporters