writer, format page is complete

Change-Id: I09f6e4354461c4374cdb0d0e0754dfee35415b45
Reviewed-on: https://gerrit.libreoffice.org/60058
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>