Update service-overview.md

Author: v-ccolin

articles/storage-mover/service-overview.md

@@ -30,7 +30,7 @@ Document score: 98 (808 words and 1 false positive)
         [![2-Minute demonstration video introducing Azure Storage Mover - click to play!](./media/overview/storage-mover-video-still.png)](https://youtu.be/bJL0JsRyP6c)
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-        Azure Storage Mover is a fully managed migration service that enables you to migrate your files and folders from on-prem or AWS S3 buckets to Azure Storage while minimizing downtime for your workload.         
+        Azure Storage Mover is a fully managed migration service that enables you to migrate your files and folders from on-premises or AWS S3 buckets to Azure Storage while minimizing downtime for your workload.         
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