[pkgdb] mingw-qt5-qtjsbackend summary updated by limb

[Fedora PackageDB]

limb set package mingw-qt5-qtjsbackend summary to Qt5 for Windows - QtJsBackend component

To make changes to this package see:
  https://admin.fedoraproject.org/pkgdb/acls/name/mingw-qt5-qtjsbackend