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

@@ -480,7 +480,7 @@ The queue will block while synchronisation takes place (all publishers
 and consumers using the queue will block or temporarily see no activity).
 This command can only be used with mirrored queues.
 To learn more, see the
-.Lk https://www.rabbitmq.com/docs/ha "RabbitMQ Classic Queue Mirroring guide"
+.Lk https://www.rabbitmq.com/docs/3.13/ha "RabbitMQ Classic Queue Mirroring guide"
 .Pp
 Note that queues with unsynchronised replicas and active consumers
 will become synchronised eventually (assuming that consumers make progress).
@@ -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