Update design repo to version 1.0.0-alpha.18

[mjamescompton]

Summary

Update design repo to version 1.0.0-alpha.18

Screenshots

• Add trademark text for lora alliance

Checklist

• [x] Scope: The referenced issue is addressed, there are no unrelated changes.
• [x] Run Locally: Verified that the docs build using make server, posted screenshots, verified external links.
• [x] Style Guidelines: Documentation obeys style guidelines in CONTRIBUTING.
• [x] Commits: Commit messages follow guidelines in CONTRIBUTING, there are no fixup commits left.