📝 Update single sign on documentation

[ASTRobinson]

A reference to the issue / Description of it

Documentation for #8356

How does this PR fix the problem?

Updates the single sign on documentation for Microsoft's Entra ID

How has this been tested?

Please describe the tests that you ran and provide instructions to reproduce.

Documentation update only.

Deployment Plan / Instructions

Will this deployment impact the platform and / or services on it?

No

Checklist (check x in [ ] of list items)

• I have performed a self-review of my own code
• All checks have passed
• I have made corresponding changes to the documentation
• Plan and discussed how it should be deployed to PROD (If needed)

Additional comments (if any)

{Please write here}

[github-actions]

Trivy Scan Success

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</details> #### `Checkov Scan` Success
<details><summary>Show Output</summary>

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CTFLint Scan Success

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Setting default tflint config...
Running tflint --init...
Installing "terraform" plugin...
Installed "terraform" (source: github.com/terraform-linters/tflint-ruleset-terraform, version: 0.9.1)
tflint will check the following folders:

Trivy Scan Success

Show Output

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Trivy will check the following folders: