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]

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 ⚠️

Additional details and impacted files

@@           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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