fix building doc in release
fix building doc in release

Previous commit was not enough :P

Change-Id: Ic429927e5e420aff729144e5802d8362dbe44393

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