Bug in def meshz(self) in telemac_file.py

Hello, a bug that prevents getting correct Z coordinate is found in the definition of the property 'meshz' in scripts/python3/data_manip/extraction/telemac_file.py (line 488-499 in 'main' branch).

    @property
    def meshz(self):
        """
        Returns y coordinates value
        """
        if self._meshz is None:
            if self.ndim == 3:
                self._meshz = self.get_mesh_coord(3)
            else:
                self._meshz = None

        return self._meshy

The last line should be 'return self._meshz'. It worked as expected after changing it.