Update docs for volume policy feature

[shubham-pampattiwar]

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Docs update to remove that only skip action is supported.

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]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.79%. Comparing base (7811b9f) to head (2fa71e4).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8070   +/-   ##
=======================================
  Coverage   58.79%   58.79%           
=======================================
  Files         357      357           
  Lines       29841    29841           
=======================================
  Hits        17545    17545           
  Misses      10851    10851           
  Partials     1445     1445           

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