fdo#39468 Translate German comments: sw/source/filter/ww1

Change-Id: I5c6ae4f1692f6ed8d1792417cb594174a35ca8fa
Reviewed-on: https://gerrit.libreoffice.org/8323
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>