pkp/pkp-lib#5540 add the new param to the docblock

classes/components/forms/publication/PublishForm.inc.php

@@ -37,6 +37,7 @@ class PublishForm extends FormComponent {
 	 *
 	 * @param $action string URL to submit the form to
 	 * @param $publication Publication The publication to change settings for
+	 * @param $submissionContext \Context journal or press
 	 * @param $requirementErrors array A list of pre-publication requirements that are not met.
 	 */
 	public function __construct($action, $publication, $submissionContext, $requirementErrors) {