Update create-new-tenant.md

[lightdrive]

Reference Entra Identity Portal instead of Azure Portal for creating new tenants as per Quickstart guide.

[prmerger-automator]

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

[learn-build-service-prod]

Learn Build status updates of commit d2e270d:

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[v-dirichards]

@barclayn

Can you review the proposed changes?

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

[nguhiu]

#sign-off

[prmerger-automator]

Invalid command: '#sign-off'. Only the assigned author of one or more file in this PR can sign off. @barclayn

[ttorble]

Hi @nguhiu - Thanks for your review. In the public repo, pull requests should be signed off by the author, another member of the content team, or a PM.

@barclayn Could you take a look? Thanks!