fix: add new quickstart link and update nav

[avarobinson]

Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, and guidelines for updating/adding docs can be found in the contribution guide)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
• If you have a breaking change, is it correctly reflected in your commit message? (e.g. feat!: breaking change)
• Did you run lint (yarn lint:check) and fix any issues? (yarn lint:write)
• Did you follow the contribution guidelines?

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PR-Codex overview

The focus of this PR is to update the TopNav component in the UI demo.

Detailed summary

• Updated link and text in TopNav component from "Docs" to "Quickstart"
• Added a new link for Integration call
• Updated URLs in the links.ts file for GitHub, Integration call, and Quickstart Guide

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Name	Status	Preview	Comments	Updated (UTC)
aa-sdk-site	❌ Failed (Inspect)			Jul 19, 2024 10:27pm
aa-sdk-ui-demo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 19, 2024 10:27pm