Update Update-SSHKeys.md
Remove unexitsing --export option.
oc version
Client Version: 4.6.8
Server Version: 4.6.17
Kubernetes Version: v1.19.0+e405995
oc get mc 99-worker-ssh -oyaml --export
Error: unknown flag: --export
See 'oc get --help' for usage
@@ -100,7 +100,7 @@ spec:
Export the `99-worker-ssh` to edit the `SSHAuthorizedKeys`.
```sh
-oc get machineconfigs 99-worker-ssh -oyaml --export > update-ssh-worker.yaml
+oc get machineconfigs 99-worker-ssh -oyaml > update-ssh-worker.yaml
```
Update the `sshAuthorizedKeys` for `core` user in `update-ssh-worker.yaml`.
