Hints for telegram-desktop in main

Hints

• asv-summary-has-dot-suffix
  org.telegram.desktop.metainfo.xml:7 - Fast. Secure. Powerful.
  The component summary should not end with a dot (`.`).
• asv-developer-name-tag-deprecated
  org.telegram.desktop.metainfo.xml:27 -
  The toplevel `developer_name` element is deprecated. Please use the `name` element in a `developer` block instead.
• asv-relation-control-in-requires
  org.telegram.desktop.metainfo.xml:52 -
  Found a user input control relation in a `requires` tag. This means users will not be able to even install the component without having the defined input control available on the system. This is usually not intended and you want to use `control` in the `recommends` tag instead.
• asv-developer-info-missing
  org.telegram.desktop.metainfo.xml -
  This component contains no `developer` element with information about its author.