EKF: Documentation edits

EKF/ekf.h

@@ -550,7 +550,7 @@ private:
 	// It is used to align the yaw angle after launch or takeoff for fixed wing vehicle.
 	bool realignYawGPS();
 
-	// calculate the magnetic declination to be used by the alignment and fusion processing
+	// Return the magnetic declination in radians to be used by the alignment and fusion processing
 	float getMagDeclination();
 
 	// reset position states of the ekf (only horizontal position)

EKF/ekf_helper.cpp

@@ -766,7 +766,7 @@ bool Ekf::resetMagHeading(Vector3f &mag_init, bool increase_yaw_var, bool update
 	return true;
 }
 
-// Calculate the magnetic declination to be used by the alignment and fusion processing
+// Return the magnetic declination in radians to be used by the alignment and fusion processing
 float Ekf::getMagDeclination()
 {
 	// set source of magnetic declination for internal use