Update zulip link to point to kernels channel

Author: SylvainCorlay

README.md

@@ -4,7 +4,7 @@
 [![Documentation Status](http://readthedocs.org/projects/xeus-python/badge/?version=latest)](https://xeus-python.readthedocs.io/en/latest/?badge=latest)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/jupyter-xeus/xeus-python/stable?urlpath=/lab/tree/notebooks/xeus-python.ipynb)
 [![lite-badge](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://jupyter-xeus.github.io/xeus-python/)
-[![Zulip](https://img.shields.io/badge/social_chat-zulip-blue.svg)](https://jupyter.zulipchat.com)
+[![Zulip](https://img.shields.io/badge/social_chat-zulip-blue.svg)](https://jupyter.zulipchat.com/#narrow/channel/539737-Jupyter-Kernels)
 
 `xeus-python` is a Jupyter kernel for Python based on the native implementation of the Jupyter protocol [xeus](https://github.com/jupyter-xeus/xeus).