change short attribute to first

Author: jeana-redhat

modules/rotating-bound-service-keys.adoc

@@ -25,7 +25,7 @@ ifdef::rotate-azure[on {azure-first}]
 is configured to operate in manual mode with 
 ifdef::rotate-aws[{sts-short},]
 ifdef::rotate-gcp[{gcp-wid-short},]
-ifdef::rotate-azure[{entra-short},]
+ifdef::rotate-azure[{entra-first},]
 you can rotate the bound service account signer key.
 
 To rotate the key, you delete the existing key on your cluster, which causes the Kubernetes API server to create a new key.