Using a short (boxd.it) URL as the review URL generates invalid links

[Damien Erambert]

When using a short URL (like https://boxd.it/4BXydL) as the review URL ends up generating invalid links in the generated HTML like those:

• https://boxd.it/eramdam/
• https://boxd.it/eramdam//films/diary/for/2023/
• https://boxd.it/4BXydL

etc

I would have opened a PR but I didn't touch Angular (let alone modern Angular..) in so long I feel like opening an issue was a better idea 😅