message: Fix XLA documentation for ReduceWindow
diff: @@ -1796,8 +1796,9 @@ XlaBuilder builder(client_, "reduce_window_2x3");
  auto shape = ShapeUtil::MakeShape(F32, {4, 6});
  auto input = builder.Parameter(0, shape, "input");
  builder.ReduceWindow(
  - input, *max,
  + input,
  /*init_val=*/builder.ConstantLiteral(LiteralUtil::MinValue(F32)),
  + *max,
  /*window_dimensions=*/{2, 3},
  /*window_stride_dimensions=*/{2, 3},
  Padding::kValid);
  