fix typo in doc
fix typo in doc

Change-Id: I4102847d0922a52b47039559a813358d5a175eef
Reviewed-on: http://gerrit.aldebaran.lan:8080/7648
Reviewed-by: fmichea <e20d0674aeea681862835ac59e1fa7c309090652@aldebaran-robotics.com>
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>
Tested-by: sbarthelemy <9c154f64c36738f8e44d945c231ac417d15bd66e@aldebaran-robotics.com>

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