OCPBUGS#18842: remove only from rollback admonition

Author: ShaunaDiaz

modules/nw-ovn-kubernetes-rollback.adoc

@@ -14,7 +14,7 @@ During the migration you must reboot every node in your cluster.
 ifeval::["{context}" == "rollback-to-openshift-sdn"]
 [IMPORTANT]
 ====
-Only rollback to OpenShift SDN if the migration to OVN-Kubernetes fails.
+Rollback to OpenShift SDN if the migration to OVN-Kubernetes fails.
 ====
 endif::[]
 
@@ -127,7 +127,7 @@ The MTU for the VXLAN overlay network. This value is normally configured automat
 The UDP port for the VXLAN overlay network. If a value is not specified, the default is `4789`. The port cannot be the same as the Geneve port that is used by OVN-Kubernetes. The default value for the Geneve port is `6081`.
 --
 +
-.Example patch command 
+.Example patch command
 [source,terminal]
 ----
 $ oc patch Network.operator.openshift.io cluster --type=merge \