Fix logo source path in the readme file on the Github packages page

The logo on [this page](https://github.com/Axedyson/syncbase/pkgs/container/syncbase-server) doesn't display, because the source path is wrong, it shouldn't be `/Axedyson/syncbase/raw/main/logo.svg` it should be `/Axedyson/syncbase/raw/main/.github/logo.svg` just like on the main [repo page](https://github.com/Axedyson/syncbase)