Updated link on upgrade snippet to Reddit post as per dEBRUYNE's request

_includes/upgrade.html

 <div class="upgrade-container">
    <input id="upgrade-toggle" type="checkbox">
    <div class="upgrade-content">
-        <p>{% t global.upgrade %} <a class="untranslated-link" href="https://getmonero.org/2018/10/11/monero-0.13.0-released.html">{% t global.moreinfo %}</a> <label class="upgrade-x" for="upgrade-toggle"></label></p>
+        <p>{% t global.upgrade %} <a class="untranslated-link" href="https://www.reddit.com/r/Monero/comments/9lcdme/preliminary_information_thread_regarding_the/">{% t global.moreinfo %}</a> <label class="upgrade-x" for="upgrade-toggle"></label></p>
     </div>
 </div>
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