message: Fixing a 404 link.
diff: @@ -100,7 +100,7 @@ Higher-level frameworks and tools that use SavedModel may provide these.
  SavedModel manages and builds upon existing TensorFlow primitives such as
  `TensorFlow Saver` and `MetaGraphDef`. Specifically, SavedModel wraps a [TensorFlow Saver](https://github.com/tensorflow/tensorflow/tree/master/tensorflow/python/training/saver.py).
  The Saver is primarily used to generate the variable checkpoints. SavedModel
  -will replace the existing [TensorFlow Inference Model Format](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/session_bundle/README.md)
  +will replace the existing [TensorFlow Inference Model Format](https://github.com/tensorflow/tensorflow/tree/r1.15/tensorflow/contrib/session_bundle#tensorflow-inference-model-format)
  as the canonical way to export TensorFlow graphs for serving.
  