Remove H2 headers from TOC

Author: salomegarnier

source/_templates/sections/_section-template.html

@@ -4,5 +4,5 @@
 {% block page_classes %}custom-section-page{% endblock %}
 
 {% block body %}
-{{ toctree(collapse=false, maxdepth=-1) }}
+{{ toctree(collapse=false, maxdepth=1) }}
 {% endblock %}