Add Perl6 subject in statement.

Author: fluca1978

doc/Language/pod.pod6

@@ -576,7 +576,7 @@ Now C<myprogram --man> will output your Pod rendered as a man page.
 
 =head1 Accessing Pod
 
-In order to access Pod documentation from within a program
+In order to access Pod documentation from within a Perl 6 program
 it is required to use the special C<=> twigil, as documented
 in the L<variables section|/language/variables#The_=_Twigil>.