Fix PHPCS

dev/skeletons/skeleton_api_class.class.php

htdocs/api/class/api.class.php

htdocs/api/class/api_access.class.php

htdocs/categories/class/api_category.class.php

htdocs/commande/class/api_commande.class.php

htdocs/compta/facture/class/api_invoice.class.php

htdocs/product/class/api_product.class.php

htdocs/societe/class/api_contact.class.php

htdocs/societe/class/api_thirdparty.class.php