Update README.md

Author: gaborbernat

README.md

@@ -4,5 +4,5 @@
 [![Supported Python
 versions](https://img.shields.io/pypi/pyversions/python-discovery.svg)](https://pypi.org/project/python-discovery/)
 [![Downloads](https://static.pepy.tech/badge/python-discovery/month)](https://pepy.tech/project/python-discovery)
-[![check](https://github.com/tox-dev/python-discovery/actions/workflows/check.yml/badge.svg)](https://github.com/tox-dev/python-discovery/actions/workflows/check.yml)
+[![check](https://github.com/tox-dev/python-discovery/actions/workflows/check.yml/badge.svg)](https://github.com/tox-dev/python-discovery/actions/workflows/check.yaml)
 [![Documentation Status](https://readthedocs.org/projects/python-discovery/badge/?version=latest)](https://python-discovery.readthedocs.io/en/latest/?badge=latest)