workflow: add div for delete workflow form

src/Bundle/ChillMainBundle/Resources/views/Workflow/delete.html.twig

@@ -3,6 +3,7 @@
 {% block title 'workflow.Delete workflow ?'|trans %}
 
 {% block display_content %}
+<div class="col-10 workflow">
     <h2>
         {{  handler.entityTitle(entityWorkflow) }}
     </h2>
@@ -10,6 +11,7 @@
     {% include handler.template(entityWorkflow) with handler.templateData(entityWorkflow)|merge({
         'display_action': false
     }) %}
+
 {% endblock %}
 
 {% block content %}
@@ -25,5 +27,5 @@
                 'form'              : delete_form
             } ) }}
     </div>
-
+</div>
 {% endblock %}