filters mesh elements basing on the same set of nodes:
-* element type is either *SMESH.EGDE*, *SMESH.FACE* or *SMESH.VOLUME*
+* element type is either *SMESH.EDGE*, *SMESH.FACE* or *SMESH.VOLUME*
* functor type is either *SMESH.FT_EqualEdges*, *SMESH.FT_EqualFaces* or *SMESH.FT_EqualVolumes*,
* threshold value is not required