Update microsoft-tunnel-conditional-access.md

[franciscopgomes]

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Requesting an update to the doc as the Application Administrator role does not allow users to run New-AzureADServicePrincipal:

new-azureadserviceprincipal : Error occurred while executing NewServicePrincipal Code: Authorization_RequestDenied Message: Insufficient privileges to complete the operation.

I could only execute this with a Global Administrator.

• Correcting all mentions of "service principle" to "service principal"

[PRMerger-2]

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

[yogkumgit]

@Brenduns Any update.

[Brenduns]

yogkumgit I've bumped the email thread with the Intune devs again. Stay tuned.

[Brenduns]

#sign-off

[yogkumgit]

@tiburd Please merge this PR. Thanks