Merge pull request #4129 from 2colours/patch-1

Fix the link of "arity" at Multi-dispatch section

Author: coke

doc/Language/glossary.pod6

@@ -678,7 +678,7 @@ L<subs|/type/Sub>) of the same name, selecting the correct one based on the
 L<parameter|/type/Parameter> prototype and the arguments it was called with.
 
 The selection process is primarily based on types and number of arguments
-(L<arity|/type/Arity>), where the narrowest, most specific candidate wins,
+(L<arity|#Arity>), where the narrowest, most specific candidate wins,
 typically without regard to the order of declaration.  The C<is default>
 trait may be used as a tie breaker in this first phase.  There is also a
 secondary phase where some different tie breakers may be evaluated in order