DOX-180 update user contact taxonomy

[conceptualshark]

Closes

Code Changes

• Update the phone_number and address nesting in the docs and visual taxonomy to match.

Pre-Merge Checklist

• [ ] All CI Pipelines Succeeded
• [x] Documentation Updated
• [x] Issue Requirements are Met
• [ ] Relevant Follow-Up Issues Created
• [x] Update `CHANGELOG.md