Fix Azure.Storage.Blobs Sample issue

[Tianyun-G]

Fix #19051

@jongio for notification.

[jsquire]

@Tianyun-G: CI is failing because the generated code doesn't match the snippet changes. Would you be so kind as to run:

<< REPOSITORY ROOT>>/eng/scripts/Update-Snippets.ps1 -ServiceDirectory "storage"

[v-xuto]

@jsquire - We have updated by your comments, please re-review this PR.

[jsquire]

@jsquire - We have updated by your comments, please re-review this PR.

I'm going to defer to the Storage team for review, as they own this library. My goal was just to assist with understanding the failing CI.

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[amnguye]

Apologies for not getting around to reviewing this PR. I actually noticed this problem when I was fixing some of the migration guide and resolved it with this PR that's already been merged.
#22380

I will go ahead and close this PR in preference to the one already merged. Please ping me if there are any other issues.