Here's an interesting suggestion...

Instead of simply reporting it to the staff and expecting us to fix it, you could engage the community mindset and make a post in the thread which says something along the lines of:-

"Unfortunately all the style guides that were linked have long since disappeared, but here's a few links to others that I've managed to find........"

Possibly even find the Embarcadero one that will undoubtedly exist and be considered a replacement for the Borland one.