User doc for v1.14

[reasonerjt]

Thank you for contributing to Velero!

Please add a summary of your change

Does your change fix a particular issue?

Fixes #(issue)

Please indicate you've done the following:

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

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 58.79%. Comparing base (0e7fb40) to head (2276f3e). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #7816 +/- ## ======================================= Coverage 58.79% 58.79% ======================================= Files 345 345 Lines 28764 28764 ======================================= Hits 16911 16911 Misses 10425 10425 Partials 1428 1428 ```

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