Link to actual documentation rather than to synopsis

Author: lizmat

doc/Language/5to6-perlop.pod6

@@ -133,7 +133,7 @@ of its arguments.
 
 C<~~> is the smartmatch operator as in Perl 5, but it's also I<just>
 the match operator in Perl 6, as noted above. For how smartmatching
-works in Perl 6, see L<https://design.perl6.org/S03.html#Smart_matching>.
+works in Perl 6, see L<the smartmatch documentation|language/operators#index-entry-smartmatch_operator>.
 
 =head2 Smartmatch Operator