fix: "pragma once" should come first

source/RobotAPI/libraries/core/TrajectoryController.h

@@ -21,10 +21,10 @@
  * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
  *             GNU General Public License
  */
+#pragma once
 
 #include "PIDController.h"
 #include "Trajectory.h"
-#pragma once
 
 namespace armarx
 {