Update README.md

The previous badge was broken. I think this one should fix it.

README.md

@@ -10,8 +10,9 @@ A dashboard for automatic monitoring of <a href="https://flask.palletsprojects.c
 </p>
 
 <span align="center">
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-![Build Status](https://github.com/flask-dashboard/Flask-MonitoringDashboard/workflows/Python%20Testing/badge.svg)
+
+[![Continous Integration](https://github.com/flask-dashboard/Flask-MonitoringDashboard/actions/workflows/python-test.yml/badge.svg)](https://github.com/flask-dashboard/Flask-MonitoringDashboard/actions/workflows/python-test.yml)
+
 [![Documentation Status](https://readthedocs.org/projects/flask-monitoringdashboard/badge/?version=latest)](http://flask-monitoringdashboard.readthedocs.io/en/latest/?badge=latest)
 [![codecov](https://codecov.io/gh/flask-dashboard/Flask-MonitoringDashboard/branch/master/graph/badge.svg)](https://codecov.io/gh/flask-dashboard/Flask-MonitoringDashboard)
 [![PyPI version](https://badge.fury.io/py/Flask-MonitoringDashboard.svg)](https://badge.fury.io/py/Flask-MonitoringDashboard)