Change <h1> to <div> in navbar-logo.html (#1733)

Co-authored-by: Bartłomiej Gawęda <[email protected]>

src/pages/_includes/layout/navbar-logo.html

@@ -4,7 +4,7 @@
 {% capture class-attr %}class="{{ prefix }}-brand {{ prefix }}-brand-autodark{% if include.class %} {{ include.class }}{% endif %}"{% endcapture %}
 
 {% if include.header %}
-<h1 {{ class-attr }}>
+<div {{ class-attr }}>
 	<a href="{{ site.base }}">
 {% else %}
 	<a href="{{ site.base }}" {{ class-attr }}>
@@ -23,7 +23,7 @@
 
 {% if include.header %}
 	</a>
-</h1>
+</div>
 {% else %}
 </a>
 {% endif %}