[docker-build] debian unstable: fix doc packages
[docker-build] debian unstable: fix doc packages

siconos/siconos,radarsat1/siconos,radarsat1/siconos,siconos/siconos,radarsat1/siconos,radarsat1/siconos,radarsat1/siconos,siconos/siconos,siconos/siconos