Simbridge Docs link in FBW installer broken

The FBW installer has an About section in SimBridge with a Documentation link leading to `https://docs.flybywiresim.com/simbridge/` which is not a valid page.

<img width="1585" height="992" alt="Image" src="https://github.com/user-attachments/assets/296bc679-5a58-4617-9292-4c0186c010f7" />