missing % for logout.html (#54)

allauth_ui/templates/account/logout.html

@@ -7,7 +7,7 @@
     <form method="post" action="{% url 'account_logout' %}">
         {% csrf_token %}
         <p>{% translate "Are you sure you want to sign out?" %}</p>
-        {% translate "Sign out" as signout_message }
+        {% translate "Sign out" as signout_message %}
         {% include "account/_button.html" with text=signout_message %}
     </form>
 {% endblock %}