Update README.md

Author: KraMorK

README.md

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 <p align="center">
 <a href="https://hub.docker.com/r/flant/addon-operator"><img src="https://img.shields.io/badge/docker-latest-2496ed.svg?logo=docker" alt="docker pull flant/addon-operator"/></a>
 <a href="https://github.com/flant/addon-operator/discussions"><img src="https://img.shields.io/badge/GitHub-discussions-brightgreen" alt="GH Discussions"/></a>
-<a href="https://t.me/kubeoperator"><img src="https://img.shields.io/badge/telegram-RU%20chat-179cde.svg?logo=telegram" alt="Telegram chat RU"/></a>
+<a href="https://t.me/flant_chat"><img src="https://img.shields.io/badge/telegram-RU%20chat-179cde.svg?logo=telegram" alt="Telegram chat RU"/></a>
 </p>
 
 **Addon-operator** combines Helm charts with hooks and values storage to transform charts into smart modules that configure themselves and respond to changes in the cluster. It is a sister project for [shell-operator](https://github.com/flant/shell-operator) and is actively used in [Deckhouse Kubernetes Platform](https://github.com/deckhouse/deckhouse) to implement its modules.