fix: delete command syntax for app registrations

[Manfrin92]

missing param

[prmerger-automator[bot]]

@Manfrin92 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod[bot]]

Learn Build status updates of commit 45fe80c:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/app-service/includes/tutorial-connect-app-app-clean.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

[ktoliver]

@cephalin

Can you review the proposed changes?

Due to the upcoming conference, all merging and publishing is on hold until the morning of November 18, 2025.

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

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

[cephalin]

#sign-off