Update yal.sl-chat.ru mirror

Hello! Please update the mirror yal.sl-chat.ru with the following information:

• Mirror domain name:
  • sl-chat.ru
• Geographical location of the mirror:
  • Finland
  • Russia
• URLs for supported access methods:
  • https://mirror1.sl-chat.ru/archlinux/
  • https://mirror2.sl-chat.ru/archlinux/
  • https://mirror3.sl-chat.ru/archlinux/
  • rsync://mirror1.sl-chat.ru/archlinux/
  • rsync://mirror2.sl-chat.ru/archlinux/
  • rsync://mirror3.sl-chat.ru/archlinux/
• Your mirror's available bandwidth:
  • 1 Gbit/s
• An administrative contact email:
  • slenderchat@sl-chat.ru
• The name of tier 1 mirror you are syncing from:
  • f4st.host (Finland's mirror)
  • pseudoform.org (Russia's mirror)