Insert Mastodon account link

Author: MagicLike

docs/overrides/main.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block extrahead %}
-  <link href="https://social.example.com/@username" rel="me" />
+  <link href="https://mstdn.social/@littlelink_custom" rel="me" />
 {% endblock %}
 
 {% block content %}