Fix bad location of hexagonal.svg file

- 404 return code : https://debian.pages.debian.net/debian-flyers/files/hexagonal.svg

Signed-off-by: Alban VIDAL <alban.vidal@zordhak.fr>
2 jobs for hexagonal-sticker in 1 minute and 24 seconds (queued for 1 second)
Status Job ID Name Coverage
  Deploy
passed #125665
pages

00:01:24

passed pages:deploy

00:00:09