Update docs to clarify supported Windows and PowerShell versions

[pauby]

Description Of Changes

Updated the documentation to include information on the supported Windows client and server operating systems, and the supported PowerShell versions.

Motivation and Context

Our documentation contained outdated and misleading infromation on what we supported.

Testing

• [x] I have previewed these changes using the Docker Container or another method before submitting this pull request.

Change Types Made

• [ ] Minor documentation fix (typos etc.).
• [x] Major documentation change (refactoring, reformatting or adding documentation to existing page).
• [ ] New documentation page added.
• [ ] The change I have made should have a video added, and I have raised an issue for this.
  • Issue #

Change Checklist

• [ ] Requires a change to menu structure (top or left-hand side)/
• [ ] Menu structure has been updated

Related Issue

N/A

[gep13]

@pauby thanks for getting this added. I have enabled auto-merge on this PR.