Use blocktrans

opentech/apply/users/templates/users/change_password.html

@@ -17,7 +17,11 @@
 
     {% if form.errors %}
         <div class="messages">
-            {% if form.errors.items|length == 1 %}{% trans "Please correct the error below." %}{% else %}{% trans "Please correct the errors below." %}{% endif %}
+            {% blocktrans count counter=form.errors.items|length %}
+            Please correct the error below.
+            {% plural %}
+            Please correct the errors below.
+            {% endblocktrans %}
 
         </div>
     {% endif %}