message: Changed tensor pseudo-code so that the example is runnable
diff: @@ -1101,18 +1101,15 @@ class DatasetV2(object):
  """Filters this dataset according to `predicate`.
  ```python
  - # NOTE: The following examples use `{ ... }` to represent the
  - # contents of a dataset.
  - a = { 1, 2, 3 }
  - b = { 4, 5, 6, 7 }
  + d = tf.data.Dataset.from_tensor_slices([1, 2, 3])
  - a.filter(lambda x: x < 3) == { 1, 2 }
  + d = d.filter(lambda x: x < 3) # [1, 2]
  # `tf.math.equal(x, y)` is required for equality comparison
  def filter_fn(x):
  - return tf.math.equal(x, 4)
  + return tf.math.equal(x, 1)
  - b.filter(filter_fn) == { 4 }
  + d = d.filter(filter_fn) # [1]
  ```
  Args:
  