Update CRD descriptions for SnapshotVolumes and restorePVs

[shubham-pampattiwar]

Signed-off-by: Shubham Pampattiwar spampatt@redhat.com

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Updates the CRDs description pertaining to SnapshotVolumes and restorePVs

Please indicate you've done the following:

• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file or added /kind changelog-not-required as a comment on this pull request.
• Updated the corresponding documentation in site/content/docs/main.

[codecov-commenter]

Codecov Report

Merging #5807 (428415c) into main (358e3b8) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5807      +/-   ##
==========================================
- Coverage   40.62%   40.60%   -0.03%     
==========================================
  Files         244      244              
  Lines       21255    21255              
==========================================
- Hits         8635     8630       -5     
- Misses      11996    12001       +5     
  Partials      624      624              

Impacted Files	Coverage Δ
pkg/uploader/provider/kopia.go	52.84% <0.00%> (-4.07%)	⬇️

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[blackpiglet]

@shubham-pampattiwar
Hi, just to confirm with you, is the purpose of removing cloud-provider-related information from documents that some of the Velero plug-ins can also work with on-premise environments?

[shubham-pampattiwar]

@blackpiglet I made this PR with respect to the recent changes that were merged (vmware-tanzu/velero-plugin-for-csi#127) in velero-plugin-for-csi where we we are using snapshotvolumes and restorePVs for csi volumes as well and not just cloud provider ones.