Missing screenshot in readme.md

[d2718nis]

The gallery file mentioned in the readme.md is missing, most likely due to Discord removing the picture.

[mvllow]

Thanks for the report, if someone comes along and can provide a screenshot that'd be much appreciated :)

[felixity1917]

This is the original file.
Additionally, I suggest replacing it with a manually created concept image resembling how it would look like if taking a screenshot of grub is more tedious.

[mvllow]

Thank you for the report and original image, we'll look into a render instead

Pull requests welcome as well ☺️