message: fix lite quantization_spec docment error
diff: @@ -36,8 +36,8 @@ quantization params: `scale=[1.0, 2.0, 3.0]`, `zero_point=[1, 2, 3]`,
  `quantization_dimension=1` will be quantized across the second dimension of t:
  t[:, 0, :, :] will have scale[0]=1.0, zero_point[0]=1
  - t[:, 1, :, :] will have scale[1]=2.0, zero_point[0]=2
  - t[:, 2, :, :] will have scale[2]=3.0, zero_point[0]=3
  + t[:, 1, :, :] will have scale[1]=2.0, zero_point[1]=2
  + t[:, 2, :, :] will have scale[2]=3.0, zero_point[2]=3
  Often, the quantized_dimension is the output_channel of the weights of
  convolutions, but in theory it can be the dimension that corresponds to each
  