gh-131741: Add documentation for Windows version detection change in `platform` (#131742)

Document the behavior change between 3.11 & 3.12, where ``platform`` now correctly detects Windows 11 and Windows Server releases past Windows Server 2012.

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Wulian <1055917385@qq.com>