Hints for gnome-shortwave in community

Hints

• asv-nonstandard-gnome-extension
  de.haeckerfelix.Shortwave.metainfo.xml:224 - kudos
  This tag is a GNOME-specific extension to AppStream and not part of the official specification. Do not expect it to work in all implementations and in all software centers.
• asv-summary-has-dot-suffix
  de.haeckerfelix.Shortwave.metainfo.xml:27 - Слушајте радио преко Интернета.
  The component summary should not end with a dot (`.`).