message: Update pydoc comment to point users to public API.
  Otherwise tesnorflow.org documentation names a method that doesn't exist.
diff: @@ -399,8 +399,8 @@ def create_dir(dirname):
  Args:
  dirname: string, name of the directory to be created
  - Notes: The parent directories need to exist. Use recursive_create_dir instead
  - if there is the possibility that the parent dirs don't exist.
  + Notes: The parent directories need to exist. Use `tf.io.gfile.makedirs`
  + instead if there is the possibility that the parent dirs don't exist.
  Raises:
  errors.OpError: If the operation fails.
  @@ -414,8 +414,8 @@ def create_dir_v2(path):
  Args:
  path: string, name of the directory to be created
  - Notes: The parent directories need to exist. Use recursive_create_dir instead
  - if there is the possibility that the parent dirs don't exist.
  + Notes: The parent directories need to exist. Use `tf.io.gfile.makedirs`
  + instead if there is the possibility that the parent dirs don't exist.
  Raises:
  errors.OpError: If the operation fails.
  