Typo "a Azure Cosmos DB"→"an Azure Cosmos DB"

ttps://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/vcore/how-to-scale-cluster
https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/cosmos-db/mongodb/vcore/how-to-scale-cluster.md
#PingMSFTDocs

Author: hyoshioka0128

articles/cosmos-db/mongodb/vcore/how-to-scale-cluster.md

@@ -79,4 +79,4 @@ You can enable or disable high availability (HA) to suit your needs. HA avoids d
 In this guide, we've shown that scaling and configuring your Cosmos DB for MongoDB vCore cluster in the Azure portal is a straightforward process. The Azure portal includes the ability to adjust the cluster tier, increase storage size, and enable or disable high availability without any downtime.
 
 > [!div class="nextstepaction"]
-> [Restore a Azure Cosmos DB for MongoDB vCore cluster](how-to-restore-cluster.md)
+> [Restore an Azure Cosmos DB for MongoDB vCore cluster](how-to-restore-cluster.md)