Add example of named sub
Add example of named sub

Usage with an identifier is more common than without.
tbrowder/doc,tbrowder/doc,dmaestro/doc,MasterDuke17/doc,jonathanstowe/doc,perl6/doc,jonathanstowe/doc,stmuk/doc,perl6/doc,perl6/doc,dmaestro/doc,dmaestro/doc,dmaestro/doc,stmuk/doc,perl6/doc,MasterDuke17/doc,MasterDuke17/doc,stmuk/doc,stmuk/doc,stmuk/doc,dmaestro/doc,tbrowder/doc,tbrowder/doc,MasterDuke17/doc,jonathanstowe/doc,jonathanstowe/doc,perl6/doc,jonathanstowe/doc