better comment.

theano/gof/tests/test_link.py

@@ -193,8 +193,9 @@ def test_container_deepcopy():
     This is a test to a work around a NumPy bug.
     """
     t = theano.tensor.scalar()
-    # It seam that astype() can return a numpy scalar with some NumPy Version.
-    # So we must call numpy.asarray with the dtype parameter.
+    # It seam that numpy.asarray(0.).astype(floatX) can return a numpy
+    # scalar with some NumPy Version. So we call numpy.asarray with
+    # the dtype parameter.
     v = numpy.asarray(0., dtype=theano.config.floatX)
     assert isinstance(v, numpy.ndarray), type(v)
     for readonly in [True, False]: