It was just "Document" to be consistent with Calc's "Spreadsheet", but
it's confusing as we have a Text driver as well.

Change-Id: I9ec10f49c3f2bdab7d8f92a9ee0a44b4536e83eb
Reviewed-on: https://gerrit.libreoffice.org/40135Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>