update contact badge

README.md

@@ -10,7 +10,7 @@
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![](https://img.shields.io/badge/Python-3.6+-blue.svg)](https://www.python.org/downloads/)
 [![OpenSSF Best Practices](https://www.bestpractices.dev/projects/7785/badge)](https://www.bestpractices.dev/projects/7785)
-[![](https://img.shields.io/badge/Contact-marie.weiel%40kit.edu-orange)](mailto:marie.weiel@kit.edu)
+[![](https://img.shields.io/badge/Contact-propulate%40lists.kit.edu-orange)](mailto:propulate@lists.kit.edu)
 [![Documentation Status](https://readthedocs.org/projects/propulate/badge/?version=latest)](https://propulate.readthedocs.io/en/latest/?badge=latest)
 ![](./coverage.svg)