add missing timeline icon

hiboo/templates/macros.html

@@ -12,7 +12,7 @@
   </div>
   {% endif %}
   <div>
-    <i class="fas fa-{{ {"signup": "address-card", "create": "plus", "transition": "recycle", "password": "lock"}[event.category] }} bg-blue"></i>
+    <i class="fas fa-{{ {"signup": "address-card", "create": "plus", "transition": "recycle", "password": "lock", "2FA": "qrcode"}[event.category] }} bg-blue"></i>
     <div class="timeline-item">
       <span class="time"><i class="fas fa-clock"></i> {{ event.created_at.time().strftime("%H:%M") }}</span>
       <h3 class="timeline-header">