message: [determinism] Fix typos in comments.
diff: @@ -156,7 +156,7 @@ class XentOpDeterministicTest(xent_op_test_base.XentOpTestBase):
  nondeterministic deterministic
  dloss/dlogits: [[2.0], [1.0], [0.0], [0.0]] [[0.0], [0.0], [0.0], [0.0]]
  - Note that only the second two label vectors are a valid probability
  + Note that only the second two label vectors are valid probability
  distributions (as required by the API) and that the gradient matches for
  those cases.
  @@ -192,7 +192,7 @@ class XentOpDeterministicTest(xent_op_test_base.XentOpTestBase):
  cases that yield different gradients for nondeterministic vs determinsitic
  implementations.
  - TODO(duncanriach): Further investigate the source the difference in
  + TODO(duncanriach): Further investigate the source of the difference in
  the gradient for this case.
  """
  self._testLabelsBroadcast(
  