message: Update description of explicit batch test
diff: @@ -44,8 +44,8 @@ class ImplicitBatchTest(trt_test.TfTrtIntegrationTestBase):
  return array_ops.identity(q, name="output_0")
  def GetParams(self):
  - """ The input parameters have different first dimension.
  - The dimensions with 1 are removed with squeeze ops in the graph.
  + """ The input has 1 as a first dimension, which is removed by the squeeze
  + op in the graph.
  In explicit batch mode, TensorRT can convert the whole graph. In this mode
  it is possible to manipulate the batch dimension using the squeeze op.
  @@ -77,7 +77,7 @@ class ImplicitBatchTest(trt_test.TfTrtIntegrationTestBase):
  def ExpectedEnginesToBuild(self, run_params):
  """Return the expected engines to build.
  - The first squeeze op is not converted by TensorRT in implicit batch mode.
  + The squeeze op is not converted by TensorRT in implicit batch mode.
  Because of this we have two TRTEngineOp in the graphs: one for the
  subgraph before 'squeeze(q,0)', and another one for the rest of the ops
  after the 'squeeze(q,0)'.
  