Update uninstall-azure-arc-data-controller.md

[Elektronenvolt]

Add missing custom resource definitions to delete. These three *.arcdata.microsoft.com CRDs had been left after applying the current docs. I had to delete them as well before a fresh install finished successful.

[prmerger-automator[bot]]

@Elektronenvolt : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[opbld31]

Learn Build status updates of commit 73cd678:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/azure-arc/data/uninstall-azure-arc-data-controller.md	:white_check_mark:Succeeded

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[Court72]

@dnethi

Can you review the proposed changes? IMPORTANT: When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged" @MicrosoftDocs/public-repo-pr-review-team

[dnethi]

#sign-off