Minor clean up of the security model authorization diagram

[james-warren0]

What

This includes a very minor visual clean up of the Authorization model diagram.

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Merge Checklist

If items do not apply to your changes, add (N/A) and mark them as complete.

Pull Request

• One or more labels describe the type of change (e.g. clarification) and associated product (e.g. HCP Terraform ).
• [N/A] Description links to related pull requests or issues, if any.

Content

• [N/A] Redirects have been added to website/redirects.js for moved, renamed, or deleted pages.
• [N/A] API documentation and the API Changelog have been updated.
• [N/A] Links to related content where appropriate (e.g., API endpoints, permissions, etc.).
• [N/A] Pages with related content are updated and link to this content when appropriate.
• [N/A] Sidebar navigation files have been updated for added, deleted, reordered, or renamed pages.
• [N/A] New pages have metadata (page name and description) at the top.
• [N/A] New images are 2048 px wide. They have HashiCorp standard annotation color (#F92672) and format (rectangle with rounded corners), blurred sensitive details (e.g. credentials, usernames, user icons), and descriptive alt text in the markdown for accessibility.
• [N/A] New code blocks have the correct syntax and line breaks to eliminate horizontal scroll bars.
• [N/A] UI elements (button names, page names, etc.) are bolded.
• The Vercel website preview successfully deployed.

Reviews

• I or someone else reviewed the content for technical accuracy.
• I or someone else reviewed the content for typos, punctuation, spelling, and grammar.

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[rkoron007]

Approving to unblock!

[rkoron007]

@james-warren0 is this good to merge (once the conflict is dealt with?)

Heads up that we will be migrating the content from terraform-docs-common into the UDR repo (https://github.com/hashicorp/web-unified-docs) this week. I'm going through and merging any documentation PRs we can get in before migration, so if this is ready to merge please feel free to do so! Otherwise you'll need to reopen it in the new repo after we migrate.

[rkoron007]

Hello @james-warren0!

The UDR migration has occurred, and the HCP Terraform documentation version now lives in the unified documentation repository. I'm going to close this PR since we are no longer serving this content from this repo, but please feel free to recreate your PR in the UDR repository within the HCP Terraform documentation:
https://github.com/hashicorp/web-unified-docs/tree/main/content/terraform-docs-common/docs/cloud-docs