Adds .perl refs in CallFrame #2632

Added the fact that from version 6.2, .perl can be called on CallFrame

doc/Type/CallFrame.pod6

@@ -100,6 +100,8 @@ Return a L<Hash|/type/Hash> that names all the variables and their values associ
     my $frame = some-value();
     say $frame.my<$the-answer>; # OUTPUT: «42␤»
 
+B<Note> From version 6.2, C<.perl> can be called on C<CallFrame>.
+
 =head1 Routines
 
 =head2 sub callframe
@@ -112,4 +114,4 @@ Returns L<Mu|/type/Mu> if there is no call information for the given level. (Neg
 
 =end pod
 
-# vim: expandtab softtabstop=4 shiftwidth=4 ft=perl6
+# vim: expandtab softtabstop=4 shiftwidth=4 ft=perl6