Fix: TF Private Endpoint interface naming update

[kevball2]

Overview/Summary

This PR updates the resource name for the example TF PE interface to align with the names used for conditional checks in the example.

This PR fixes/adds/changes/removes

1. Changed resource "azurerm_private_endpoint" this to resource "azurerm_private_endpoint" "this_managed_dns_zone_groups" . This changed is needed to allow for conditional checks used in the example

Breaking Changes

1. Resource name changes will cause a redeployment of the resource.

As part of this Pull Request I have

• Read the Contribution Guide and ensured this PR is compliant with the guide
• Checked for duplicate Pull Requests
• Associated it with relevant GitHub Issues or ADO Work Items (Internal Only)
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Ensured PR tests are passing
• Updated relevant and associated documentation (e.g. Contribution Guide, Docs etc.)

[microsoft-github-policy-service]

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Note

This label was added as per ITA06.

[matebarabas]

@Azure/avm-core-team-technical-terraform, can you please take a look at this? Thanks!