OZG-7308 extended schedulerCron doc string by adding default

archive-manager-server/src/main/java/de/ozgcloud/archive/common/xta/XtaProperties.java

@@ -51,7 +51,8 @@ public class XtaProperties {
 	 */
 	private List<XtaIdentifier> clientIdentifiers;
 	/*
-	 * Times in cron format at which Quittungen are fetched.
+	 * Times in cron format at which Quittungen are fetched. Default is set to every
+	 * 15 minutes.
 	 */
 	private String schedulerCron = "0 0/15 * * * *";