fix duplicate security declaration

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35550 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/mixin/downloadable.py

@@ -100,7 +100,7 @@ class DownloadableMixin:
     return str(data)
 
   security.declareProtected(Permissions.AccessContentsInformation,
-                                                                  'index_html')
+                            'getStandardFileName')
   def getStandardFileName(self, format=None):
     """Returns the document coordinates as a standard file name. This
     method is the reverse of getPropertyDictFromFileName.