Fix the version state of BlockVolume (#12237)

content/en/docs/concepts/storage/persistent-volumes.md

@@ -309,9 +309,7 @@ Currently, storage size is the only resource that can be set or requested.  Futu

### Volume Mode

{{< feature-state for_k8s_version="v1.9" state="alpha" >}}

To enable this feature, enable the `BlockVolume` feature gate on the apiserver, controller-manager and the kubelet.
{{< feature-state for_k8s_version="v1.13" state="beta" >}}

Prior to Kubernetes 1.9, all volume plugins created a filesystem on the persistent volume.
Now, you can set the value of `volumeMode` to `raw` to use a raw block device, or `filesystem`
@@ -548,10 +546,7 @@ spec:

## Raw Block Volume Support

{{< feature-state for_k8s_version="v1.9" state="alpha" >}}

To enable support for raw block volumes, enable the `BlockVolume` feature gate on the
apiserver, controller-manager and the kubelet.
{{< feature-state for_k8s_version="v1.13" state="beta" >}}

The following volume plugins support raw block volumes, including dynamic provisioning where
applicable.