message: Fix monitored_session docstring.
diff: @@ -762,17 +762,24 @@ class _MonitoredSession(object):
  computations with access to a raw session. The returned value of the
  `step_fn` will be returned from `run_step_fn`, unless a stop is
  requested. In that case, the next `should_stop` call will return True.
  - Example usage: ```python
  - with tf.Graph().as_default(): c =
  - tf.compat.v1.placeholder(dtypes.float32) v = tf.add(c, 4.0) w =
  - tf.add(c, 0.5)
  + Example usage:
  + ```python
  + with tf.Graph().as_default():
  + c = tf.compat.v1.placeholder(dtypes.float32)
  + v = tf.add(c, 4.0)
  + w = tf.add(c, 0.5)
  def step_fn(step_context):
  a = step_context.session.run(fetches=v, feed_dict={c: 0.5})
  - if a <= 4.5: step_context.request_stop()
  - return step_context.run_with_hooks(fetches=w, feed_dict={c: 0.1})
  + if a <= 4.5:
  + step_context.request_stop()
  + return step_context.run_with_hooks(fetches=w,
  + feed_dict={c: 0.1})
  +
  with tf.MonitoredSession() as session:
  - while not session.should_stop(): a = session.run_step_fn(step_fn)
  - ``` Hooks interact with the `run_with_hooks()` call inside the
  + while not session.should_stop():
  + a = session.run_step_fn(step_fn)
  + ```
  + Hooks interact with the `run_with_hooks()` call inside the
  `step_fn` as they do with a `MonitoredSession.run` call.
  Returns:
  