Improve text of titles in page headers
Improve text of titles in page headers

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