Add examples for $obj.say. Fix minor typo.
Add examples for $obj.say. Fix minor typo.

perl6/perl6-examples,shlomif/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,stmuk/perl6-examples,stmuk/perl6-examples,stmuk/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,Quinny/perl6-examples