Update the hyperlinks for Fedora CoreOS and Silverblue

The older https://coreos.fedoraproject.org/ style links now redirect to
the https://fedoraproject.org/coreos/ style ones.

index.md

@@ -9,7 +9,7 @@ layout: default
 Toolbox environments have seamless access to the user's home directory, the Wayland and X11 sockets, networking (including Avahi), removable devices (like USB sticks), systemd journal, SSH agent, D-Bus, ulimits, /dev and the udev database, etc..
 
 This is particularly useful on [OSTree](https://ostree.readthedocs.io/en/latest/) based operating systems like
-[Fedora CoreOS](https://coreos.fedoraproject.org/) and [Silverblue](https://silverblue.fedoraproject.org/). The intention of these systems is to discourage installation of software on the host, and instead install software as (or in) containers — they mostly don't even have package managers like DNF or YUM. This makes it difficult to set up a development environment or troubleshoot the operating system in the usual way.
+[Fedora CoreOS](https://fedoraproject.org/coreos/) and [Silverblue](https://fedoraproject.org/silverblue/). The intention of these systems is to discourage installation of software on the host, and instead install software as (or in) containers — they mostly don't even have package managers like DNF or YUM. This makes it difficult to set up a development environment or troubleshoot the operating system in the usual way.
 
 Toolbx solves this problem by providing a fully mutable container within which one can install their favourite development and troubleshooting tools, editors and SDKs. For example, it's possible to do `yum install ansible` without affecting the base operating system.