Update README.md

Author: Lartu

README.md

@@ -5,6 +5,7 @@
   <img src="https://img.shields.io/badge/stable_release-v5-blue.svg">
   <img src="https://img.shields.io/badge/license-apache_2.0-yellow">
   <img src="https://github.com/Lartu/ldpl/actions/workflows/clang-format-check.yml/badge.svg">
+  <a href="t.me/ldpllang"><img src="https://img.shields.io/badge/-LDPL_on_Telegram-red?color=blue&logo=telegram&logoColor=white"></a>
 </p>
 
 [**LDPL**](https://www.ldpl-lang.org/) is a powerful, general-purpose compiled programming language designed