fix

Author: bjqian

articles/azure-web-pubsub/howto-enable-geo-replication.md

@@ -115,7 +115,7 @@ Update **webpubsub** extension to the latest version, then run:
   az webpubsub replica create --sku Premium_P1 -l eastus --replica-name MyReplica --name MyWebPubSub -g MyResourceGroup
    ```
 
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+----
 
 ## Pricing and resource unit
 Each replica has its **own** `unit` and `autoscale settings`.