fix return type

Author: tomvanmele

src/compas_ghpython/artists/volmeshartist.py

@@ -37,7 +37,7 @@ def draw(self, cells=None, color=None):
 
         Returns
         -------
-        list[System.Guid]
+        list[:rhino:`Rhino.Geometry.Mesh`]
             The GUIDs of the created Rhino objects.
             Every cell is drawn as an individual mesh.