fixed a typo, regenerated language files

adminsortable/templates/adminsortable/change_list.html

@@ -35,7 +35,7 @@
 	</h1>
 	{% if sortable_by_class.is_sortable %}
 	<p>
-	{% blocktrans %}You may also drag and drop {{ sortable_by_class_display_name }} to change thier order.{% endblocktrans %}
+	{% blocktrans %}You may also drag and drop {{ sortable_by_class_display_name }} to change their order.{% endblocktrans %}
 	</p>
 	{% endif %}
 {% endblock %}