message: Link to RFC in TF32 docstring
diff: @@ -65,10 +65,10 @@ def enable_tensor_float_32_execution(enabled):
  print(tf.linalg.matmul(x, y)) # [[2.0002, 2.0002], [2.0002, 2.0002]]
  ```
  - We soon will create an RFC proposing that TensorFloat-32 remain enabled by
  - default in stable versions of TensorFlow. We expect the RFC to be accepted,
  - but if it isn't, TensorFloat-32 will be disabled by default in TensorFlow
  - 2.4.
  + There is [an RFC](https://github.com/tensorflow/community/pull/287) proposing
  + that TensorFloat-32 remain enabled by default in stable versions of
  + TensorFlow. We expect the RFC to be accepted, but if it isn't, TensorFloat-32
  + will be disabled by default in TensorFlow 2.4.
  To check whether TensorFloat-32 execution is currently enabled, use
  `tf.config.experimental.tensor_float_32_execution_enabled`.
  