Motion: fix enum name

src/xpcc/motion/motor_controllers/differential_drive_controller_impl.hpp

@@ -412,7 +412,7 @@ DifferentialDriveController<Configuration, MotorLeft, MotorRight, OdometryLeft,
 			omegaTarget = 40;
 		}
 		else {
-			controlStrategy = ControlStrategy::CALIBRATION;
+			controlStrategy = ControlStrategy::Calibration;
 		}
 
 		calibrationInProgress = true;