Fix header for Safari to work

Author: JanAxelsson

docs/_includes/head-custom.html

@@ -0,0 +1,12 @@
+<!-- start custom head snippets, customize with your own _includes/head-custom.html file -->
+
+<!-- Setup theme-color -->
+{% include head-custom-theme-colors.html %}
+
+<!-- Setup Google Analytics -->
+{% include head-custom-google-analytics.html %}
+
+<!-- You can set your favicon here -->
+<link rel="shortcut icon" type="image/x-icon" href="{{ "favicon.ico" | prepend: site.baseurl }}" >
+
+<!-- end custom head snippets -->