Update azure-netapp-files-understand-storage-hierarchy.md

[ms-vincent]

updated min size for large volumes

[prmerger-automator]

@ms-vincent : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change. @b-hchen

[learn-build-service-prod]

Learn Build status updates of commit 907c980:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/azure-netapp-files/azure-netapp-files-understand-storage-hierarchy.md	✅Succeeded

For more details, please refer to the build report.

[v-dirichards]

@akashdubey-ms

Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[v-dirichards]

@akashdubey-ms Could you review this proposed update to your article and enter #sign-off in a comment if it's ready to merge?

Thanks!

[akashdubey]

Not sure why I received request to review this? Anyways it looks good to me 👍

[v-dirichards]

@akashdubey I'll merge this PR based on your approval. If this article requires further changes, please open a separate pull request.