Update all-in-one.md (#1379)

@martabal has removed his repo and moved to working on the imagegenius immich repo,

docs/docs/install/all-in-one.md

@@ -18,4 +18,4 @@ For installation instructions, refer to the [Github Repository][github].
 
 For issues, open an issue on the associated [GitHub Repository][github].
 
-[github]: https://github.com/martabal/docker-immich
+[github]: https://github.com/imagegenius/docker-immich/