T:G:multiuser: fix typo in manifest

Change-Id: Ibfb12d209c7e8c4b63f9684bb86e49b7669c541d
Signed-off-by: Stephane Desneux <stephane.desneux@open.eurogiciel.org>
Merge branch 'master' of github.com:eurogiciel-oss/openTizen_manifest_addon