Fix build warning

Author: pauljewellmsft

articles/storage/blobs/storage-blob-user-delegation-sas-create-dotnet.md

@@ -45,6 +45,8 @@ Once you've obtained the user delegation key, you can create a user delegation S
 
 :::code language="csharp" source="~/azure-storage-snippets/blobs/howto/dotnet/BlobDevGuideBlobs/CreateSas.cs" id="Snippet_CreateUserDelegationSASBlob":::
 
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 ## Use a user delegation SAS to authorize a client object
 
 You can use a user delegation SAS to authorize a client object to perform operations on a container or blob based on the permissions granted by the SAS.
@@ -61,6 +63,8 @@ The following code example shows how to use the user delegation SAS to authorize
 
 :::code language="csharp" source="~/azure-storage-snippets/blobs/howto/dotnet/BlobDevGuideBlobs/CreateSas.cs" id="Snippet_UseUserDelegationSASBlob":::
 
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 ## Resources
 
 To learn more about creating a user delegation SAS using the Azure Blob Storage client library for .NET, see the following resources.