message: Update utils_impl.py
diff: @@ -50,7 +50,7 @@ def build_tensor_info(tensor):
  Args:
  tensor: Tensor or SparseTensor whose name, dtype and shape are used to
  build the TensorInfo. For SparseTensors, the names of the three
  - constitutent Tensors are used.
  + constituent Tensors are used.
  Returns:
  A TensorInfo protocol buffer constructed based on the supplied argument.
  