rabbitmqctl.8: Point to 3.13.x mirroring guide

[Why]
Classic queue mirroring was removed from RabbitMQ 4.0.x.

(cherry picked from commit 5158460)
(cherry picked from commit a89a627)

Author: dumbbell

deps/rabbit/docs/rabbitmqctl.8

@@ -1317,11 +1317,11 @@ queue, including stack, heap, and internal structures.
 .It Cm mirror_pids
 If the queue is mirrored, this lists the IDs of the mirrors (follower replicas).
 To learn more, see the
-.Lk https://www.rabbitmq.com/docs/ha "RabbitMQ Mirroring guide"
+.Lk https://www.rabbitmq.com/docs/3.13/ha "RabbitMQ Mirroring guide"
 .It Cm synchronised_mirror_pids
 If the queue is mirrored, this gives the IDs of the mirrors (follower replicas) which
 are in sync with the leader replica. To learn more, see the
-.Lk https://www.rabbitmq.com/docs/ha "RabbitMQ Mirroring guide"
+.Lk https://www.rabbitmq.com/docs/3.13/ha "RabbitMQ Mirroring guide"
 .It Cm state
 The state of the queue.
 Normally