Fix: css class name

htdocs/commande/liste.php

@@ -362,7 +362,7 @@ if ($resql)
 				if (($objp->fk_statut > 0 && $objp->fk_statut < 3) || ($objp->fk_statut == 3 && $objp->facturee == 0))
 				{
 					print '&nbsp;<a href="'.DOL_URL_ROOT.'/commande/orderstoinvoice.php?socid='.$companystatic->id.'">';
-					print img_picto($langs->trans("CreateInvoiceForThisCustomer").' : '.$companystatic->nom, 'object_bill', 'hideonsmrtphone').'</a>';
+					print img_picto($langs->trans("CreateInvoiceForThisCustomer").' : '.$companystatic->nom, 'object_bill', 'hideonsmartphone').'</a>';
 				}
 			}
 		}