rotating square has issues with different canvas dimensions

[lesnitsky]

No description provided.

[jankohlbach]

I don't know if that's what this issue is about, but I figured out width and height have to be switched here:
instead of
...createRect(canvas.width / 2 - 100, canvas.height / 2 - 100, 200, 200, 0),
I think it should be
...createRect(canvas.height / 2 - 100, canvas.width / 2 - 100, 200, 200, 0),

here https://github.com/lesnitsky/webgl-month/blob/dev/README.md?plain=1#L4360 and in the following occurances
the first value is top, so it would make more sense to use the height, then it's centered

[lesnitsky]

feel free to submit a PR