Hints for telegram-desktop in community

Warnings

• asv-releases-not-in-order
  telegram-desktop.appdata.xml - 2.6.5~beta << 2.7.5~beta
  The releases are not sorted in a latest to oldest version order. This is required as some tools will assume that the latest version is always at the top. Sorting releases also increases overall readability of the metainfo file.
• asv-description-has-plaintext-url
  telegram-desktop.appdata.xml:69 - ul
  The description contains a web URL in plain text. This is not allowed, please use the <url/> tag instead to share links.