Dead link in README.md

The links to download uni0553 on Miniml are now dead, throwing a 404. This is true for the links in the [Running the Game](https://github.com/Bauxitedev/meteorite/blob/1cf2ffd8cc86242d9641cba1792a4c5c39e1139a/README.md?plain=1#L29) and [Font](https://github.com/Bauxitedev/meteorite/blob/1cf2ffd8cc86242d9641cba1792a4c5c39e1139a/README.md?plain=1#L52) segments.