Adds example for | and capture, refs #1889
Adds example for | and capture, refs #1889

jonathanstowe/doc,perl6/doc,perl6/doc,jonathanstowe/doc,tbrowder/doc,tbrowder/doc,perl6/doc,tbrowder/doc,MasterDuke17/doc,perl6/doc,dmaestro/doc,stmuk/doc,stmuk/doc,jonathanstowe/doc,MasterDuke17/doc,MasterDuke17/doc,dmaestro/doc,tbrowder/doc,dmaestro/doc,dmaestro/doc,stmuk/doc,perl6/doc,jonathanstowe/doc,dmaestro/doc,MasterDuke17/doc,jonathanstowe/doc,stmuk/doc,stmuk/doc