Update system.pod6
Update system.pod6

Fix bad link (missing |) and change from entry target to target.
perl6/doc,perl6/doc,MasterDuke17/doc,perl6/doc,perl6/doc,tbrowder/doc,MasterDuke17/doc,MasterDuke17/doc,MasterDuke17/doc,tbrowder/doc,tbrowder/doc,perl6/doc,tbrowder/doc