doc/user/op_guide: Fix typo verb tense create vs create
as downstream in
@@ -10,7 +10,7 @@ Create deployment:
$ kubectl create -f example/deployment.yaml
```
-etcd operator will automatically creates a Kubernetes Custom Resource Definition (CRD):
+etcd operator will automatically create a Kubernetes Custom Resource Definition (CRD):
```bash
$ kubectl get customresourcedefinitions
