linked tr/// description to resulting StrDistance

Author: molecules

doc/Language/operators.pod6

@@ -203,7 +203,7 @@ It behaves similar to
 L«C<Str.trans>|/routine/trans» called with a single L<Pair|/type/Pair> argument, where
 key is the matching part (characters C<dol> in the example above) and value is
 the replacement part (characters C<wne> in the example above). Accepts the
-same adverbs as L«C<Str.trans>|/routine/trans». Returns the StrDistance object
+same adverbs as L«C<Str.trans>|/routine/trans». Returns the L<StrDistance|/type/StrDistance> object
 that measures the distance between original value and the resultant string.
 
     my $str = 'old string';