Make competition badges on puzzles a clickable link

It's nice to see what competition a given puzzle was used in, but it would be very nice to have those badges link directly to the competition results if available. e.g. the "WJPC 2023" badge on NY Postcard would link to worldjigsawpuzzle.org/wjpc/2023/individual/B and "Canada Championship 2024" on Hello Vinyl would link to worldjigsawpuzzle.org/cjpa/nationals2024