Updated Git Annex Links (#1504)

README.md

@@ -652,7 +652,7 @@ See https://github.com/n1trux/awesome-sysadmin#distributed-filesystems
 
 #### File transfer/synchronization
 
-- [Git Annex](https://git.joeyh.name/git/git-annex.git/) - File synchronization between computers, servers, external drives. ([Source Code](https://github.com/joeyh/git-annex)) `GPL-3.0` `Haskell`
+- [Git Annex](https://git-annex.branchable.com/) - File synchronization between computers, servers, external drives. ([Source Code](https://git.joeyh.name/index.cgi/git-annex.git/)) `GPL-3.0` `Haskell`
 - [Kinto](https://kinto.readthedocs.org) - Kinto is a minimalist JSON storage service with synchronisation and sharing abilities. ([Source Code](https://github.com/Kinto)) `Apache-2.0` `Python`
 - [Nextcloud](https://nextcloud.com/) - Access and share your files, calendars, contacts, mail and [more](https://apps.nextcloud.com/) from any device, on your terms. ([Demo](https://demo.nextcloud.com/), [Source Code](https://github.com/nextcloud/server)) `AGPL-3.0` `PHP`
 - [OpenSSH/SFTP](http://www.openssh.com/) - Secure File Transfer Program. ([Source Code](http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh)) `BSD` `C`