message: Typo fix in error message.
diff: @@ -2936,7 +2936,7 @@ static Status ValidateGatherDimensionNumbers(
  const GatherDimensionNumbers& gather_dim_numbers,
  absl::Span<const int64> slice_sizes) {
  TF_RETURN_IF_ERROR(
  - ExpectArray(input_shape, "input tensor operand gather op"));
  + ExpectArray(input_shape, "input tensor operand of gather op"));
  TF_RETURN_IF_ERROR(
  ExpectArray(start_indices_shape, "gather indices operand of gather op"));
  