Correct comment: we can select icon theme in LibreOffice -> View

Change-Id: I692e9d6037b2fa5a9f69069177b6d9925661ec60
Reviewed-on: https://gerrit.libreoffice.org/7974
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>