Fix link

Author: Altai-man

doc/Type/IO/Socket/Async.pod6

@@ -252,7 +252,7 @@ L<Promise|/type/Promise>.
 
 In order to close the underlying listening socket created by C<listen> you can
 C<close> the
-L<IO::Socket::Async::ListenSocket/type/IO::Socket::Async::ListenSocket>. See
+L<IO::Socket::Async::ListenSocket|/type/IO::Socket::Async::ListenSocket>. See
 L<listen|#method_listen> for examples.
 
 =head2 method socket-host