Update remote URL for demo data files

[eugman]

Updated to match the MS learn page. The old URL no longer works.

[Copilot]

Pull Request Overview

Updates the remote URL for demo data files to match the MS Learn page, replacing a non-functional blob storage URL with the correct web core URL.

• Updated remote URL from blob.core.windows.net to z13.web.core.windows.net domain
• Changed path from /public/ to /data/ directory structure

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