fdo#39468 Translate German Comments - sc/source/core/data/documen2.cxx

Change-Id: I9a426f40f8cdce1f1ebe207dd9ada8154d8fde46
Reviewed-on: https://gerrit.libreoffice.org/12195
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>