[pkgdb] xfce4-soundmenu-plugin summary updated by limb

[Fedora PackageDB]

limb set package xfce4-soundmenu-plugin summary to MPRIS2 control plugin for the Xfce panel

To make changes to this package see:
  https://admin.fedoraproject.org/pkgdb/acls/name/xfce4-soundmenu-plugin