message: Fix saved_model CODEOWNERS typo
diff: /tensorflow/contrib/pi_examples/ @maciekcc
  /tensorflow/contrib/quantization/ @petewarden
  /tensorflow/contrib/rnn/ @ebrevdo @scottzhu
  -/tensorflow/contrib/saved_model/ @nfiedel @sukritiramesh @allenl
  +/tensorflow/contrib/saved_model/ @nfiedel @sukritiramesh @allenlavoie
  /tensorflow/contrib/seq2seq/ @ebrevdo @lmthang
  /tensorflow/contrib/session_bundle/ @nfiedel @sukritiramesh
  /tensorflow/contrib/slim/ @sguada @thenbasilmanran
  