Add a substitution Category Of Operations into ODT generation for Invoices

htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php

@@ -343,6 +343,7 @@ class doc_generic_invoice_odt extends ModelePDFFactures
 				$nbProduct = 0;
 				$nbService = 0;
 				foreach ($object->lines as $line) {
+
 					// determine category of operation
 					if ($categoryOfOperation < 2) {
 						$lineProductType = $line->product_type;