docs: index: update copyright years

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2021-02-04 16:06:38 +01:00
parent 8aa4842fa8
commit 02dce8cad0

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Welcome to the Proxmox Backup documentation!
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| Copyright (C) 2019-2020 Proxmox Server Solutions GmbH
| Copyright (C) 2019-2021 Proxmox Server Solutions GmbH
| Version |version| -- |today|
Permission is granted to copy, distribute and/or modify this document under the