Fix URL and icon

templates/integrations/add_trello.html

@@ -11,14 +11,14 @@
     <div class="jumbotron">
         <p>
             With this integration, {% site_name %} will create a
-            <a href="https://trell.ocom/">Trello</a> card each
+            <a href="https://trello.com/">Trello</a> card each
             time a check goes down.
         </p>
 
         <div class="text-center">
             {% csrf_token %}
             <a href="{{ authorize_url }}" class="btn btn-lg btn-default">
-                <img class="ai-icon" src="{% static 'img/integrations/discord.png' %}" alt="Discord" />
+                <img class="ai-icon" src="{% static 'img/integrations/trello.png' %}" alt="Trello" />
                 Connect Trello
             </a>
         </div>