Modification for the textures beginner tutorial.

[ThePuzzledDev]

I was reading the tutorial, and was just wondering why you modify the entire texture coords instead of calling img.flipv(). The code would look something like this:

pub fn from_bytes(
        device: &wgpu::Device,
        queue: &wgpu::Queue,
        bytes: &[u8],
        label: &str,
    ) -> Result<Self, ImageError> {
        let img = image::load_from_memory(bytes)?.flipv();
        Self::from_image(device, queue, &img, Some(label))
    }

It seems a lot simpler than modifying the coordinate system.