Hints for hydrapaper in main

Warnings

• asv-custom-key-duplicated
  :451 - Purism::form_factor
  A key can only be used once.
• screenshot-download-error
  Error while downloading screenshot from 'https://gitlab.gnome.org/GabMus/HydraPaper/-/raw/website/static/screenshots/modes.png': Unexpected status code: 503
  This might be a temporary server issue, or the screenshot is no longer available.