Incorrect descriptor result

Hello, @jmrozanec.
I use next cron expression 0 0 0 ? * 6 * and use class CronDescriptor.instanse(Msg.getCurrent()).describe()
I want to get at 00:00 at and Saturday day.
I get at 00:00 at and Friday days
I debug code and find that in DescriptionStrategyFactory, diff is always =-1, but if it is 0 result will be correct.
````
final Function nominal = integer -> {
int diff = definition instanceof DayOfWeekFieldDefinition ? DayOfWeek.MONDAY.getValue() - ((DayOfWeekFieldDefinition) definition).getMondayDoWValue().getMondayDoWValue() : 0;
return DayOfWeek.of(integer + diff < 1 ? 7 : integer + diff).getDisplayName(TextStyle.FULL, bundle.getLocale());
};
````