Issue 3243300 by agami4: Change HTML tag of the page title

templates/node/node--hero--sky.html.twig

@@ -109,9 +109,9 @@
 
       {% block card_title %}
         {{ title_prefix }}
-        <h2{{ title_attributes }} class="teaser__title">
+        <h1{{ title_attributes }} class="teaser__title">
           <a href="{{ url }}" rel="bookmark">{{ label }}</a>
-        </h2>
+        </h1>
         {{ title_suffix }}
       {% endblock %}