admin.html.et in express_admin-1.3.1

- old
+ new

@@ -1,9 +1,9 @@
 '<!DOCTYPE html>'.html_safe+
 html {
   head {
     title { title_content }
-    meta(name: "description", content: "#{description_meta_content}")
+    meta(name: "description", content: "#{helpers.description_meta_content}")
     meta(name: "viewport", content: "width=device-width, initial-scale=1.0")
     admin_javascript_and_css_includes
     yield(:page_css)
     csrf_meta_tags
   }