[Typo]: `FrameworkElement` link leads to the old docs

[hcz]

Summary

Link for FrameworkElement usage docs points out to Windows Desktop 7 that is not the latest anymore. It's better to use link without version, to point out to the latest

Page

https://react.dev/learn/understanding-your-ui-as-a-tree#the-render-tree

Details

Link for FrameworkElement under the "Deep Dive" leads to the version 7 of the Windows Desktop, but there are Windows Desktop 8 and Windows Desktop 9 RC 2 released. It may be better if the link don't use version of the environment