Spruce up entry on comb a bit.
Spruce up entry on comb a bit.

  Note comb is non-overlapping
  Use less parentheticals in text
  Add an example using <()> regex feature

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