[IMP] repair: rename the action menu 'Create Invoice'

Rename the action menu 'Create Invoice' by 'Create invoices' for the
model 'repair.order'.

Linked to task 1984526
Related to PR #33720

addons/repair/wizard/repair_make_invoice_views.xml

@@ -20,7 +20,7 @@
             </field>
         </record>
 
-        <act_window name="Create Invoice"
+        <act_window name="Create invoices"
             res_model="repair.order.make_invoice"
             binding_model="repair.order"
             binding_views="list"