Tweak: add a note to make clear that updating the number format only …

…affects new orders (#598)

includes/documents/class-wcpdf-invoice.php

@@ -370,7 +370,7 @@ public function init_settings() {
 						),
 					),
 					/* translators: document type */
-					'description' => __( 'For more information about setting up the number format and see the available placeholders for the prefix and suffix, check this article:', 'woocommerce-pdf-invoices-packing-slips' ) . sprintf( ' <a href="https://docs.wpovernight.com/woocommerce-pdf-invoices-packing-slips/number-format-explained/" target="_blank">%s</a>', __( 'Number format explained', 'woocommerce-pdf-invoices-packing-slips') ) . '.<br><br>'. sprintf( __( '<strong>Note</strong>: if you have already created a custom %s number format with a filter, the above settings will be ignored.', 'woocommerce-pdf-invoices-packing-slips' ), __( 'invoice', 'woocommerce-pdf-invoices-packing-slips' ) ),
+					'description' => __( 'For more information about setting up the number format and see the available placeholders for the prefix and suffix, check this article:', 'woocommerce-pdf-invoices-packing-slips' ) . sprintf( ' <a href="https://docs.wpovernight.com/woocommerce-pdf-invoices-packing-slips/number-format-explained/" target="_blank">%s</a>', __( 'Number format explained', 'woocommerce-pdf-invoices-packing-slips') ) . '.<br><br>'. sprintf( __( '<strong>Note</strong>: Changes made to the number format will only be reflected on new orders. Also, if you have already created a custom %s number format with a filter, the above settings will be ignored.', 'woocommerce-pdf-invoices-packing-slips' ), __( 'invoice', 'woocommerce-pdf-invoices-packing-slips' ) ),
 				)
 			),
 			array(