Removed "/" if extension does not exist

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@21300 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Telephone.py

@@ -401,6 +401,9 @@ class Telephone(Coordinate, Base):
         notation=notation.replace('<number>',telephone_number)
         notation=notation.replace('<ext>',telephone_extension)
 
+      if telephone_extension == '':
+        notation=notation.replace('/','')
+
       return notation
 
     security.declareProtected(Permissions.AccessContentsInformation,