Hints for plank-player in main

Hints

• asv-content-rating-missing
  org.kde.invent.plank_player.metainfo.xml -
  This component has no `content_rating` tag to provide age rating information. You can generate the tag data online by answering a few questions at https://hughsie.github.io/oars/
• asv-summary-has-dot-suffix
  org.kde.invent.plank_player.metainfo.xml:38 - Reprodutor multimedia para reproducir ficheiros locais en Plasma Bigscreen permitindo navegar só cun mando a distancia.
  The component summary should not end with a dot (`.`).
• asv-summary-has-dot-suffix
  org.kde.invent.plank_player.metainfo.xml:37 - Lecteur multimédia pour la lecture de fichiers locaux sur un grand écran avec Plasma, permettant la navigation avec une simple télécommande.
  The component summary should not end with a dot (`.`).