Updated required owned elms rule description

[WilcoFiers]

When reviewing this rule I noticed the description is out of sync with what it actually requires.

Need for Call for Review: none

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How to Review And Approve

• Go to the “Files changed” tab
• Here you will have the option to leave comments on different lines.
• Once the review is completed, find the “Review changes” button in the top right, select “Approve” (if you are really confident in the rule) or "Request changes" and click “Submit review”.
• Make sure to also review the proposed Call for Review period. In case of disagreement, the longer period wins.

[Jym77]

Looks good. Not approving since Dan already did.

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