Update telegram-miniapp-server.mdx

Author: ihsraham

src/pages/guides/telegram-miniapp-server.mdx

@@ -28,6 +28,13 @@ Before diving into development, experience Web3Auth in action! Check out our dem
 
 :::
 
+:::info Source Code
+
+The backend example featured in this guide is part of a full working demo:  
+[**Web3Auth Telegram Mini App Example**](https://github.com/Web3Auth/web3auth-core-kit-examples/tree/main/single-factor-auth-web/sfa-web-ton-telegram-example)
+
+:::
+
 ### **Objectives**
 
 This guide is part of a two-part series aimed at helping you build a fully functioning Telegram Mini