message: Set the library name based on the version of TensorFlow
diff: @@ -250,8 +250,13 @@ def build_docs(output_dir, code_url_prefix, search_hints=True):
  "https://github.com/tensorflow/estimator/tree/master/tensorflow_estimator",
  )
  + if LooseVersion(tf.__version__) < LooseVersion('2'):
  + root_title = 'TensorFlow'
  + elif LooseVersion(tf.__version__) >= LooseVersion('2'):
  + root_title = 'TensorFlow 2.0'
  +
  doc_generator = generate_lib.DocGenerator(
  - root_title="TensorFlow 2.0 Preview",
  + root_title=root_title,
  py_modules=[("tf", tf)],
  base_dir=base_dirs,
  search_hints=search_hints,
  