Fix typo'ed internal link

Author: codesections

doc/Language/functions.pod6

@@ -348,7 +348,9 @@ for the L<Signature|/type/Signature#Type_constraints> class.
 
 For some signature differences (notably when using a where clause or a subset)
 the order of definition of the multi methods or subs is used, evaluating
-each possibility in turn.  See L<multi resolution by order of definition> below for examples.
+each possibility in turn.  See
+L<multi resolution by order of definition|language/functions#multi_resolution_by_order_of_definition>
+below for examples.
 
 C<multi> without any specific routine type always defaults to a C<sub>, but you
 can use it on methods as well. The candidates are all the multi methods of the