Split service availability to individual sheets by region

[jfaurskov]

Change loop in Get-Report.ps1 so that a separate worksheet is created for each availability file included in the get-report command
Update doc 7-Report.md to reflect current functionality

[Copilot]

Pull request overview

This PR refactors the report generation logic to create separate Excel worksheets for each region's availability data, rather than combining all regions into a single worksheet. The documentation is updated to reflect the new behavior and provide current examples.

• Restructured the availability report loop to process each JSON file independently and create individual worksheets per region
• Updated documentation examples to use region-specific file names (e.g., southeastasia, westeurope)
• Corrected the output description to accurately reflect that only .xlsx files are generated

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
docs/wiki/7-Report.md	Updated heading hierarchy, modernized example file paths, and corrected output file format description
7-Report/Get-Report.ps1	Moved $reportData initialization inside the outer loop and relocated worksheet creation logic to generate separate sheets per region file

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[lvlindv]

Tested the changes and verified that the output format matches expectations.