allow dd

Author: coke

doc/Language/5to6-nutshell.pod6

@@ -1652,7 +1652,7 @@ so Tiny it lost the "t").  This will print the C<.perl> representation plus
 some extra information that could be introspected, of the given variables on
 STDERR:
 
-=begin code :preamble<no strict;>
+=begin code :preamble<no strict;> :ok-test<dd>
 # Perl 6
     dd $foo, $bar, @baz;
 # Output