Updater changelog links displayed incorrectly for 3rd-party repos

https://github.com/getsentry/sentry-dart/pull/2578

<img width="523" alt="Image" src="https://github.com/user-attachments/assets/ce855a79-d805-41ac-b06b-163adf1b3d96" />