Document extra magic of $() 6.c shortcut
Document extra magic of $() 6.c shortcut

It doesn't just stringify, but actually checks .ast value first
and returns it if it's truthy or stringifies match object if not.

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