add ling to /type/Variable#trait_is_dynamic

Author: schultzdavid

doc/Language/variables.rakudoc

@@ -300,11 +300,12 @@ my $*FOO = 'bar';
 say foo; # OUTPUT: «bar␤»
 =end code
 
+See also L<trait is dynamic|/type/Variable#trait_is_dynamic>.
+
 Dynamic variables can have lexical scope when declared with C<my> or package
 scope when declared with C<our>. Dynamic resolution and resolution through
 symbol tables introduced with C<our> are two orthogonal issues.
 
-
 X<|Syntax,$?>X<|Syntax,?>X<|Syntax,$?>X<|Syntax,@?>X<|Syntax,%?>X<|Syntax,&?>
 =head2 The C<?> twigil