Remove extra parenthesis

security/security_rules.xml

@@ -18,7 +18,7 @@
 
         <record id="group_cg_administrator" model="res.groups">
             <field name="name">Administrateur CG</field>
-            <field name="implied_ids" eval="[(4, ref('cgscop_partner.group_add_period')), (4, ref('cgscop_partner.group_edit_period')),(4, ref('group_ur_list_modif')))]"/>
+            <field name="implied_ids" eval="[(4, ref('cgscop_partner.group_add_period')), (4, ref('cgscop_partner.group_edit_period')),(4, ref('group_ur_list_modif'))]"/>
         </record>
 
         <record id="base.res_users_rule" model="ir.rule">