Fix link and text.

aleksis/apps/alsijil/templates/alsijil/manage_personal_note_filter.html

@@ -8,7 +8,7 @@
 {% block content %}
   {% if personal_note_filter %}
     <a href="{% url 'delete_personal_note_filter' personal_note_filter.id %}" class="waves-effect waves-dark btn red">
-      <i class="material-icons">add</i>{% blocktrans %}Add filter{% endblocktrans %}
+      <i class="material-icons">delete</i>{% blocktrans %}Delete filter{% endblocktrans %}
     </a>
   {% endif %}