fix runtime class in example-fedora.yaml

We've switched to 'kata' as runtimeclass because it is what upstream
kata-deploy uses as well because users got confused about the -oc.

This is why we switched to 'kata' as the name for the 4.6 release already.

On the master branch we are still missing this change.
Fix the example pod file and the README accordingly.

Signed-off-by: Jens Freimann <jfreimann@redhat.com>

README.md

@@ -39,7 +39,7 @@ oc describe kataconfig example-kataconfig
 and look at the field 'Completed nodes' in the status. If the value matches the number of worker nodes the installation is completed.
 
 #### Runtime Class
-Once the kata runtime binaries are successfully installed on the intended workers, Kata Operator will create a [runtime class](https://kubernetes.io/docs/concepts/containers/runtime-class/) `kata-oc`. This runtime class can be used to deploy the pods that will use the Kata Runtime.
+Once the kata runtime binaries are successfully installed on the intended workers, Kata Operator will create a [runtime class](https://kubernetes.io/docs/concepts/containers/runtime-class/) `kata`. This runtime class can be used to deploy the pods that will use the Kata Runtime.
 
 #### Run an Example Pod using the Kata Runtime
 ```

config/samples/example-fedora.yaml

@@ -13,4 +13,4 @@ spec:
         - containerPort: 8080
       command: ["python3"]
       args: [ "-m", "http.server", "8080"]
-  runtimeClassName: kata-oc
+  runtimeClassName: kata