SyncTrayzor has been archived, switch to new fork

SyncTrayzor (https://github.com/canton7/SyncTrayzor) has been archived recently. Syncthing's official site now lists this fork as the recommended fork: https://github.com/GermanCoding/SyncTrayzor

<img width="659" height="131" alt="Image" src="https://github.com/user-attachments/assets/4a9b9a6c-2d8e-4000-8585-42c5b59bb9e2" />