[FIX] account: open tax adjusments wizard as a new window

This fix corrects the inconsistency of the 'discard' and 'cancel' buttons of the tax adjuments wizard

addons/account/views/tax_adjustments.xml

@@ -5,6 +5,7 @@
             <field name="res_model">tax.adjustments.wizard</field>
             <field name="view_type">form</field>
             <field name="view_mode">form</field>
+            <field name="target">new</field>
         </record>
         <menuitem action="tax_adjustments_form" id="menu_action_tax_adjustment" parent="account.menu_finance_entries" sequence="30"/>
 </odoo>