Update upgrade-to-data-lake-storage-gen2.md

Adding that upgrade operation to gen2 is free.

Author: Vignesh-Microsoft

articles/storage/blobs/upgrade-to-data-lake-storage-gen2.md

@@ -80,7 +80,7 @@ Renaming a blob is far more efficient because client applications can rename a b
 
 ## Impact on costs
 
-Storage costs aren't impacted, but transactions costs are impacted. Use these pages to assess compare costs. 
+While the operation of upgrade to gen2 itself is free and storage costs aren't impacted, but transactions costs are impacted. Use these pages to assess compare costs. 
 
 - [Block blob pricing](https://azure.microsoft.com/pricing/details/storage/blobs/).
 
@@ -158,4 +158,4 @@ As you move between content sets, you'll notice some slight terminology differen
 
 When you are ready to upgrade your storage account to include Data Lake Storage Gen2 capabilities, see this step-by-step guide. 
 > [!div class="nextstepaction"]
-> [Upgrade Azure Blob Storage with Azure Data Lake Storage Gen2 capabilities](upgrade-to-data-lake-storage-gen2-how-to.md)
+> [Upgrade Azure Blob Storage with Azure Data Lake Storage Gen2 capabilities](upgrade-to-data-lake-storage-gen2-how-to.md)