message: Fix reference in HParams docstring.
  In the tf.contrib.training.HParams.HParams class docstring, `tf.HParams` should be `tf.contrib.training.HParams`. (I don't think there currently exists a `tf.HParams` alias.)
diff: @@ -353,7 +353,9 @@ class HParams(object):
  def my_program():
  # Create a HParams object specifying the names and values of the
  # model hyperparameters:
  - hparams = tf.HParams(learning_rate=0.1, num_hidden_units=100,
  + hparams = tf.contrib.training.HParams(
  + learning_rate=0.1,
  + num_hidden_units=100,
  activations=['relu', 'tanh'])
  # Override hyperparameters values by parsing the command line
  @@ -387,7 +389,7 @@ class HParams(object):
  # Define 3 hyperparameters: 'learning_rate' is a float parameter,
  # 'num_hidden_units' an integer parameter, and 'activation' a string
  # parameter.
  - hparams = tf.HParams(
  + hparams = tf.contrib.training.HParams(
  learning_rate=0.1, num_hidden_units=100, activation='relu')
  hparams.activation ==> 'relu'
  