Translate german comments in wrtw8sty.cxx

Please, only apply this patch if you are native speaking German.
I'm not a native speaker, so a double check is really necessary
and appreciated.

Thanks in advance.

Change-Id: Iee7603c3fb8d78b951b967bd5942df4b1e9634f6
Reviewed-on: https://gerrit.libreoffice.org/2575Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>