Update traits.pod6

bad link fix

Author: finanalyst

doc/Language/traits.pod6

@@ -99,7 +99,7 @@ necessary unless you are effectively working with that interface.
 =head2 C<is> on routines
 
 The C<is> trait can be used on the definition of methods and routines to
-establish L<precedence|/functions#Precedence> and
+establish L<precedence|/language/functions#Precedence> and
 L<associativity|/language/functions#Associativity>. They act as a L<sub defined
 using C<trait_mod>|/type/Sub#Traits> which take as argument the types and names
 of the traits that are going to be added. In the case of subroutines, traits