add discord header

{% extends "base.html" %}

{% block announce %}

<a href="https://discord.gg/5QKpGqR">

   Join the Go2Scale <strong>community</strong> on

   <span class="twemoji">

     {% include ".icons/fontawesome/brands/discord.svg" %}

   </span>

   <strong>Discord</strong>

</a>

{% endblock %}