use rst warning instead special caracters

web_warning_on_save/__openerp__.py

@@ -25,12 +25,16 @@
     "author": "Camptocamp,Odoo Community Association (OCA)",
     'license': 'AGPL-3',
     'website': 'http://www.camptocamp.com',
-    'description': u"""
+    'description': """
     This module was written to extend the functionality of
     saving a record in the web interface.
-    /!\/!\/!\ In no way this module stops the save of the record.
+
+    .. warning::
+
+        In no way this module stops the save of the record.
         You must consider this as a warning displayed
-    to the user AFTER save completed. /!\/!\/!\
+        to the user AFTER save completed.
+
     If you don't want OpenERP to save the record, you should use constraints.
 
     Usage