Update doc as per SDH finding

[volodk85]

If customer follows strictly to current Tutorial: Disaster recovery based on bi-directional cross-cluster replication it is possible to fall into recursive auto-following trap.

In order to work properly leader_index_exclusion_patterns must use wildcard rather than template

Working setup (assuming clusterA and clusterB have bi-directional link)

### On cluster A ###
curl -X PUT "localhost:9200/_ccr/auto_follow/logs-generic-default" -H 'Content-Type: application/json' -d'{"remote_cluster":"clusterB","leader_index_patterns":["logs*"],"leader_index_exclusion_patterns":"*-replicated_from_clustera","follow_index_pattern":"{{leader_index}}-replicated_from_clusterb"}'

### On cluster B ###
curl -X PUT "localhost:19200/_ccr/auto_follow/logs-generic-default" -H 'Content-Type: application/json' -d'{"remote_cluster":"clusterA","leader_index_patterns":["logs*"],"leader_index_exclusion_patterns":"*-replicated_from_clusterb","follow_index_pattern":"{{leader_index}}-replicated_from_clustera"}'

### On cluster A (run few times) ###
curl -X POST "localhost:9200/logs-new_a/_doc" -H 'Content-Type: application/json' -d'{}'

### On cluster B (run few times) ###
curl -X POST "localhost:19200/logs-new_b/_doc" -H 'Content-Type: application/json' -d'{}'

curl -X GET "localhost:9200/_cat/indices"
yellow open logs-new_a                          dsK5Rns_Rvym1z145d1Q0w 1 1 3 0 8.9kb 8.9kb 8.9kb
yellow open logs-new_b-replicated_from_clusterb -kvsL0BYSeyOYt10dcfoeg 1 1 4 0 6.1kb 6.1kb 6.1kb

curl -X GET "localhost:19200/_cat/indices"
yellow open logs-new_b                          hacSzTt9R1G5EDU6BbbpaQ 1 1 4 0 11.7kb 11.7kb 11.7kb
yellow open logs-new_a-replicated_from_clustera HuSibqb2SkKr9872JLoUvA 1 1 3 0    6kb    6kb    6kb

[github-actions]

Documentation preview:

• ✨ Changed pages

[elasticsearchmachine]

Pinging @elastic/es-docs (Team:Docs)

[jrodewig]

LGTM. Thanks!

[shainaraskas]

💚 All backports created successfully

Status	Branch	Result
✅	8.11
✅	8.10
✅	8.9
✅	8.8

Questions ?

Please refer to the Backport tool documentation