Fix static PVC example

apiVersion: v1

kind: PersistentVolume

metadata:

  name: manualbucket/path

  name: manualbucket-with-path

spec:

  storageClassName: csi-s3

  capacity:

    - ReadWriteMany

  claimRef:

    namespace: default

    name: manualclaim

    name: csi-s3-manual-pvc

  csi:

    driver: ru.yandex.s3.csi

    controllerPublishSecretRef:

apiVersion: v1

kind: PersistentVolumeClaim

metadata:

  name: csi-s3-pvc

  name: csi-s3-manual-pvc

spec:

  # Empty storage class disables dynamic provisioning

  storageClassName: ""