Update oracle-database-regions.md

[julioo]

Update Canada Central to dual zone (two AZs are available)

[prmerger-automator]

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

[learn-build-service-prod]

Learn Build status updates of commit cec3c8f:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/oracle/oracle-db/oracle-database-regions.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[v-regandowner]

@jjaygbay1 - 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

[v-dirichards]

@jjaygbay1 Could you review this proposed update to your article and enter #sign-off in a comment if it's ready to merge?

Thanks!

[v-dirichards]

@julioo The article has been substantially updated or deleted, and this change no longer applies. If you'd still like to update the article, please open a new PR. Or if you believe this PR was closed by mistake, email the PublicPRs alias.

#please-close
@MicrosoftDocs/public-repo-pr-review-team