message: Update as_bytes to note that the resulted slice is in native endian
diff: @@ -694,7 +694,7 @@ impl DynamicImage {
  }
  }
  - /// Return this image's pixels as a byte slice.
  + /// Return this image's pixels as a native endian byte slice.
  pub fn as_bytes(&self) -> &[u8] {
  image_as_bytes(self)
  }
  