fixed error message typo for item block action

[sseago]

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Please add a summary of your change

Fixed a typo in an ItemBlockAction error message.

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 (make new-changelog) or comment /kind changelog-not-required on this PR.
• [x ] Updated the corresponding documentation in site/content/docs/main.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 59.19%. Comparing base (6a1d8df) to head (6fa81ec). Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
...ork/itemblockaction/v1/item_block_action_server.go	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8305 +/- ## ======================================= Coverage 59.19% 59.19% ======================================= Files 367 367 Lines 30840 30850 +10 ======================================= + Hits 18255 18263 +8 - Misses 11124 11125 +1 - Partials 1461 1462 +1 ```

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