Update README to include link to documentation

[qpetraroia]

Added a section for getting started with AKS desktop.

Description

Updating the README to include a link to the official Azure documentation

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring
• CI/CD changes
• Other: **___**

Related Issues

N/A

Changes Made

Update the README.

Testing

N/A

Test Cases

Describe the test cases that were run:

N/A

Screenshots/Videos

N/A

Checklist

N/A

Breaking Changes

If this is a breaking change, describe:

N/A

Performance Impact

• No performance impact
• Performance improved
• Performance degraded (explain why this is acceptable)

Documentation Updates

• README.md updated
• API documentation updated
• Code comments updated
• User guide updated
• No documentation updates needed

Reviewer Notes

Any specific areas you'd like reviewers to focus on or questions you have.