Simplify Azure Maps PMTiles example

[bdon]

• change pmtiles library version to 3.2.0
• simplify addProtocol code
• remove unnecessary call to add
• rename map source for clarity

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

Learn Build status updates of commit 0547e77:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/azure-maps/add-custom-protocol-pmtiles.md	:white_check_mark: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

[Jak-MS]

@bdon - in order to review your changes, we'll need you to agree to the CLA. See https://github.com/MicrosoftDocs/azure-docs/pull/124687#issuecomment-2427587924

thanks!

[ShannonLeavitt]

We'll wait until @bdon signs the CLA.

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

[bdon]

@microsoft-github-policy-service agree company="Protomaps LLC"

[prmerger-automator[bot]]

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

[Court72]

@sinnypan

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.

[yulinscottkang]

#sign-off

[prmerger-automator[bot]]

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

[sinnypan]

#sign-off, thank you for your contribution @bdon