Update tutorials.rst

Author: ndem0

docs/source/tutorials.rst

@@ -7,3 +7,6 @@ We made some tutorial examples:
 - `Turorial 2 <tutorial-2-iges.html>`_ shows how to deal with iges (CAD) files and FFD.
 - `Turorial 3 <tutorial-3-rbf.html>`_ shows how to apply the radial basis function to mesh nodes.
 - `Turorial 4 <tutorial-4-idw.html>`_ shows how to perform a deformation using the inverse distance weighting method to mesh nodes.
+- `Turorial 5 <tutorial-5-file.html>`_ shows how to perform a deformation to an object stored in a file.
+- `Turorial 6 <tutorial-6-ffd-rbf.html>`_ shows deforming a computational mesh.
+