Add UBR details to device posture

[cf-rhett]

Summary

Adding UBR to windows posture checks. This adds details on where to find it and what it is

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[ranbel]

how do you enter the Build number into the OS version check?

[cf-rhett]

It will look like this but we're thinking of renaming the version extra title

[cf-rhett]

I've changed some of the titles/placeholders to more accurately reflect what the customer would actually enter. Do you think this would warrant any changes here?

[ranbel]

yeah we should update all instances of **Version extra** to reflect the new titles