fdo#39468 Translate German Comments - shellio.cxx

Change-Id: I932440ae95a6e7599168e88e9a17686b67763247
Reviewed-on: https://gerrit.libreoffice.org/8667
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>