Nightly test fix (#6475)

* fix rename to mainline fedora on nightly install

Signed-off-by: Derek Nola <derek.nola@suse.com>

.github/workflows/nightly-install.yaml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         channel: [stable]
-        vm: [centos-7, rocky-8, fedora-coreos, opensuse-leap, opensuse-microos, ubuntu-focal]
+        vm: [centos-7, rocky-8, fedora, opensuse-leap, opensuse-microos, ubuntu-focal]
         include:
           - {channel: latest, vm: rocky-8}
           - {channel: latest, vm: ubuntu-focal}

README.md

@@ -1,4 +1,5 @@
 K3s - Lightweight Kubernetes
+![Nightly CI](https://github.com/k3s-io/k3s/actions/workflows/nightly-install.yaml/badge.svg)
 ===============================================
 
 Lightweight Kubernetes.  Production ready, easy to install, half the memory, all in a binary less than 100 MB.