fix docstring

Author: MatthijsBurgh

ed_sensor_integration/include/ed/kinect/fitter.h

@@ -109,7 +109,7 @@ class Fitter
 
     /**
      * @brief Fitter constructor
-     * @param nr_data_points nr_data_points for the beam model
+     * @param nr_data_points Number of data points for the beam model
      * @param fx focal length for the beam model
      */
     Fitter(unsigned int nr_data_points, float fx);