JCore - AVD Initial w/ URL Fixes

[JCoreMS]

Overview/Summary

Replace this with a brief description of what this Pull Request fixes, changes, etc.

This PR fixes/adds/changes/removes

1. Fix non-working deployment buttons (URLs contained "blob" and fix US Gov button for .us vs .com)
2. Updated URL for Excel file which was also not working from relative path to raw github path so it will open in Office Web App or download.

Breaking Changes

N/A

As part of this Pull Request I have

• Read the Contribution Guide and ensured this PR is compliant with the guide
• Checked for duplicate Pull Requests
• Associated it with relevant GitHub Issues or ADO Work Items (Internal Only)
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Ensured PR tests are passing
• Updated relevant and associated documentation (e.g. Contribution Guide, Docs etc.)