README.md: use official links for debian/ubuntu

README.md

@@ -40,7 +40,8 @@ For Linux:
 * [Arch](https://aur.archlinux.org/packages/ntfs2btrfs-git) (thanks to [nicman23](https://github.com/nicman23))
 * [Fedora](https://src.fedoraproject.org/rpms/ntfs2btrfs) (thanks to [Conan-Kudo](https://github.com/Conan-Kudo))
 * [Gentoo ebuild](https://raw.githubusercontent.com/maharmstone/ntfs2btrfs/master/ntfs2btrfs-20210923.ebuild)
-* [Debian & Ubuntu](https://sid.ethz.ch/debian/ntfs2btrfs/) (thanks to [alexmyczko](https://github.com/alexmyczko))
+* [Debian](https://packages.debian.org/ntfs2btrfs) (thanks to [alexmyczko](https://github.com/alexmyczko))
+* [Ubuntu](https://packages.ubuntu.com/ntfs2btrfs) (thanks to [alexmyczko](https://github.com/alexmyczko))
 
 For other distributions or operating systems, you will need to compile it yourself - see
 below.