Fix URL for .DEFINITE

Author: zoffixznet

doc/Language/typesystem.pod6

@@ -36,7 +36,8 @@ type constraint may change in this case.
 
 =head2 Type Objects
 
-To test if an object is a type object, use L«C<.DEFINITE>|/routine/DEFINITE» method:
+To test if an object is a type object, use
+L«C<.DEFINITE>|/language/mop#index-entry-syntax_DEFINITE-DEFINITE» method:
 
 =begin code :ok-test<WHAT>
     my $a = Int;