Use new argument function validation technique

kinematics/index.org

@@ -177,7 +177,7 @@ We define the wanted position/orientation of the Hexapod under study.
   ARB = Rz*Ry*Rx;
   AP = [0.01; 0.02; 0.03]; % [m]
 
-  hexapod = initializeMicroHexapod(struct('AP', AP, 'ARB', ARB));
+  hexapod = initializeMicroHexapod('AP', AP, 'ARB', ARB);
 #+end_src
 
 We run the simulation.
@@ -203,6 +203,7 @@ And we verify that we indeed succeed to go to the wanted position.
 | -1.2659e-10 |  6.5603e-11 |  6.2183e-10 |
 |  1.0354e-10 | -5.2439e-11 | -5.2425e-10 |
 | -5.9816e-10 |   5.532e-10 | -1.7737e-10 |
+
 * TODO Tests on the transformation from reference to wanted position :noexport:
 :PROPERTIES:
 :header-args:matlab+: :eval no