fix doc warning
fix doc warning

Change-Id: Ice5f9aa5b4585f2a4cb539c0865bf53688d25bd6

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