Alz resiliency guidance

[sebassem]

Overview/Summary

• Adding a parameters file for the vwan to support availability zones
• Adding a wiki entry for zonal deployment of platform resources
• fix formatting of vwan connectivity parameters note

This PR fixes/adds/changes/removes

Closes #721
AB#32900

Wiki page
parameters file for vwan module

Breaking Changes

N/A

Testing Evidence

N/A

As part of this Pull Request I have

• Read the Contribution Guide and ensured this PR is compliant with the guide
• Ensured the resource API versions in .bicep file/s I am adding/editing are using the latest API version possible
• Checked for duplicate Pull Requests
• Associated it with relevant GitHub Issues
• (ALZ Bicep Core Team Only) Associated it with relevant ADO Items
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated one or more of the following tests (if required)
  • Unit
  • Linting
  • E2E (End-To-End)
  • ValidateAzCloud (Base validation in Azure Cloud)
  • ValidateMcCloud (Base validation in Azure China Cloud)
• Updated relevant and associated documentation (e.g. Contribution Guide, Module READMEs, Wiki Docs etc.)
• If relevant, created or updated Code Tours here

[azure-boards]

✅ Successfully linked to Azure Boards work item(s):

• User Story 32900

[oZakari]

This looks good to me @sebassem, thank you very much! Also, don't worry about the linter for this one, it appears to be getting hung up on this link: https://github.com/Azure/ALZ-Bicep/wiki/Resiliency within the sidebar which does not yet exist as expected.