message: Fix docstring so that code is formatted properly.
  I think missing newline makes the public documentation have garbled code snippets.
diff: @@ -950,7 +950,8 @@ class TensorArray(object):
  `while_loop` and `map_fn`. It supports gradient back-propagation via special
  "flow" control flow dependencies.
  - Example 1: plain reading and writing.
  + Example 1: Plain reading and writing.
  +
  >>> ta = tf.TensorArray(tf.float32, size=0, dynamic_size=True, clear_after_read=False)
  >>> ta = ta.write(0, 10)
  >>> ta = ta.write(1, 20)
  @@ -967,6 +968,7 @@ class TensorArray(object):
  dtype=float32)>
  Example 2: Fibonacci sequence algorithm that writes in a loop then returns.
  +
  >>> @tf.function
  ... def fibonacci(n):
  ... ta = tf.TensorArray(tf.float32, size=0, dynamic_size=True)
  @@ -981,7 +983,8 @@ class TensorArray(object):
  <tf.Tensor: shape=(7,), dtype=float32,
  numpy=array([0., 1., 1., 2., 3., 5., 8.], dtype=float32)>
  - Example 3: A simple loop interacting with a tf.Variable.
  + Example 3: A simple loop interacting with a `tf.Variable`.
  +
  >>> v = tf.Variable(1)
  >>>
  >>> @tf.function
  