doc: better wording
doc: better wording

Change-Id: I5847fc0a133e90703aec8ba3638649f9f1c5aff0
Reviewed-on: http://gerrit.aldebaran.lan:8080/7934
Reviewed-by: ncornu <13ba26b8f12d26c819f48749c65f2f7f5c1d13db@aldebaran-robotics.com>
Reviewed-by: fmichea <e20d0674aeea681862835ac59e1fa7c309090652@aldebaran-robotics.com>
Tested-by: sbarthelemy <9c154f64c36738f8e44d945c231ac417d15bd66e@aldebaran-robotics.com>

dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild