File _servicedata of Package check-a11y

<servicedata>
<service name="tar_scm">
                <param name="url">https://salsa.debian.org/a11y-team/check-a11y.git/</param>
              <param name="changesrevision">5fd723d25a4287dd0852c8ba50c4c3517930cd3e</param></service></servicedata>