chore: call to super in docs (#235)

Author: EdwardBetts

docs/source/_templates/footer.html

@@ -1,5 +1,5 @@
 {% extends "!footer.html" %}
 {%- block contentinfo %}
-{{ super }}
+{{ super() }}
 <p>We are looking for contributors to help with our documentation, if you are interested please <a href="https://github.com/humbertogontijo/python-roborock">contribute here.</a>
 {% endblock %}