Style guide links are broken

One-sentence description

Download links in the style guide, e.g. https://cloud.thalia.nu/s/NP6T7cpfiAHqBXb, don't work anymore.

Current behaviour / Reproducing the bug

In the style guide there are some links that link to the Thalia cloud, these downloads have either been expired or have been removed.

Expected behaviour

The links download the suggested file