message: Add spacing in the FollowMe example
diff: /**
  * @file follow_me.cpp
  +*
  * @brief Example that demonstrates the usage of Follow Me plugin.
  * The example registers with FakeLocationProvider for location updates
  * and sends them to the Follow Me plugin which are sent to drone. You can observe
  * drone following you. We print last location of the drone in flight mode callback.
  +*
  * @author Shakthi Prashanth <shakthi.prashanth.m@intel.com>
  * @date 2018-01-03
  */
  