Add one more to show that also weekdays + intervals are possible
Further improve wording + reduce translation needs for others entries.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
this is a freely editable combobox, which shows five usable examples and
their syntax, allowing users to deduct how the syntax works without
reading documentation
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>