[JVM] Update overlooked ref to HLL language perl6
[JVM] Update overlooked ref to HLL language perl6

This was done in all other places with b787095358.

labster/rakudo,rakudo/rakudo,rakudo/rakudo,salortiz/rakudo,nbrown/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,salortiz/rakudo,labster/rakudo,tbrowder/rakudo,rakudo/rakudo,nbrown/rakudo,MasterDuke17/rakudo,softmoth/rakudo,labster/rakudo,labster/rakudo,salortiz/rakudo,tbrowder/rakudo,nbrown/rakudo,salortiz/rakudo,softmoth/rakudo,nbrown/rakudo,salortiz/rakudo,softmoth/rakudo,nbrown/rakudo,rakudo/rakudo,softmoth/rakudo,labster/rakudo,tony-o/rakudo,tbrowder/rakudo,tony-o/rakudo,salortiz/rakudo,tony-o/rakudo,tony-o/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,nbrown/rakudo,tbrowder/rakudo,softmoth/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,rakudo/rakudo,tony-o/rakudo,labster/rakudo,tbrowder/rakudo,tony-o/rakudo,rakudo/rakudo