Merge pull request #51909 from obrown1205/Pods_Nodes51826

GH#51826 Updated array with - key for pods nodes

Author: jab-rh

modules/nw-metallb-operator-limit-speaker-to-nodes.adoc

@@ -26,7 +26,7 @@ spec:
   nodeSelector:  <.>
     node-role.kubernetes.io/worker: ""
   speakerTolerations:   <.>
-    key: "Example"
+  - key: "Example"
     operator: "Exists"
     effect: "NoExecute"
 ----