doc: add annotations in PV config to support Delete reclaimPolicy

[andyzhangx]

What type of PR is this?
/kind documentation

What this PR does / why we need it:
doc: add annotations in PV config to support Delete reclaimPolicy

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

• this PR fixed following error:

# k describe pv pv-smb
Name:            pv-smb
Labels:          <none>
Annotations:     pv.kubernetes.io/bound-by-controller: yes
Finalizers:      [kubernetes.io/pv-protection]
StorageClass:    smb
Status:          Failed
Claim:           default/pvc-smb
Reclaim Policy:  Delete
Access Modes:    RWX
VolumeMode:      Filesystem
Capacity:        100Gi
Node Affinity:   <none>
Message:         error getting deleter volume plugin for volume "pv-smb": no deletable volume plugin matched
Source:
    Type:              CSI (a Container Storage Interface (CSI) volume source)
    Driver:            smb.csi.k8s.io
    FSType:
    VolumeHandle:      unique-volumeid
    ReadOnly:          false
    VolumeAttributes:      source=//smb-server.default.svc.cluster.local/share
Events:
  Type     Reason              Age   From                         Message
  ----     ------              ----  ----                         -------
  Warning  VolumeFailedDelete  22s   persistentvolume-controller  error getting deleter volume plugin for volume "pv-smb": no deletable volume plugin matched

Release note:

none

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx

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[coveralls]

Pull Request Test Coverage Report for Build 3903072730

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 84.845%

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Totals
Change from base Build 3902929180:	0.0%
Covered Lines:	823
Relevant Lines:	970

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💛 - Coveralls