Fix output of Instant method example in DateTime.p6
Fix output of Instant method example in DateTime.p6

perl6/doc,tbrowder/doc,tbrowder/doc,MasterDuke17/doc,MasterDuke17/doc,perl6/doc,MasterDuke17/doc,tbrowder/doc,perl6/doc,MasterDuke17/doc,tbrowder/doc,perl6/doc,perl6/doc