fix: changed an indicator icon

_layouts/landing.html

@@ -49,7 +49,7 @@
         </div>
         {% else %}
         <div class="indicator tooltip" id="internal-indicator">
-            <i class="material-icons">unpublished</i>
+            <i class="material-icons">visibility_off</i>
             <span class="tooltip-text">
                 You are <strong>not connected</strong> to the uni.lu network. <br />You see only publically-available cards. <br />In order to see all, please connect to the VPN.
             </span>