[OSDOCS-15315]: Backport etcd note changes to 4.18

Author: lahinson

backup_and_restore/control_plane_backup_and_restore/disaster_recovery/scenario-2-restoring-cluster-state.adoc

@@ -17,6 +17,10 @@ include::modules/dr-restoring-cluster-state-sno.adoc[leveloffset=+1]
 // Restoring to a previous cluster state
 include::modules/dr-restoring-cluster-state.adoc[leveloffset=+1]
 
+[role="_additional-resources"]
+.Additional resources
+* xref:../../../machine_management/control_plane_machine_management/cpmso-troubleshooting.adoc#cpmso-ts-etcd-degraded_cpmso-troubleshooting[Recovering a degraded etcd Operator]
+
 // Restoring a cluster from etcd backup manually
 include::modules/manually-restoring-cluster-etcd-backup.adoc[leveloffset=+1]
 

modules/dr-restoring-cluster-state.adoc

@@ -22,7 +22,7 @@ For high availability (HA) clusters, a three-node HA cluster requires you to shu
 
 [NOTE]
 ====
-If your cluster uses a control plane machine set, see "Troubleshooting the control plane machine set" for a more simple etcd recovery procedure. For {product-title} on a single node, see "Restoring to a previous cluster state for a single node".
+If your cluster uses a control plane machine set, see "Recovering a degraded etcd Operator" in "Troubleshooting the control plane machine set" for an etcd recovery procedure. For {product-title} on a single node, see "Restoring to a previous cluster state for a single node".
 ====
 
 [IMPORTANT]

modules/restore-replace-stopped-etcd-member.adoc

@@ -10,7 +10,7 @@ This procedure details the steps to replace an etcd member that is unhealthy eit
 
 [NOTE]
 ====
-If your cluster uses a control plane machine set, see "Recovering a degraded etcd Operator" in "Troubleshooting the control plane machine set" for a more simple etcd recovery procedure.
+If your cluster uses a control plane machine set, see "Recovering a degraded etcd Operator" in "Troubleshooting the control plane machine set" for an etcd recovery procedure.
 ====
 
 .Prerequisites