Simplify quickstart page

[mintlify]

Streamlined the quickstart guide by removing verbose explanations and consolidating steps. The page now provides a faster path to deployment with clearer, more concise instructions.

Files changed:

• quickstart.mdx - Simplified intro, deployment steps, and first change section

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Note

Condenses the Quickstart into a single 3-step deployment flow and simplified first-change instructions, removing repo-choice tabs and extra guidance.

• Docs (quickstart.mdx): Quickstart simplification
  • Replace verbose intro with concise tagline.
  • Consolidate deployment into a single 3-step Steps flow; remove repository-choice tabs, tips, and screenshots.
  • Streamline "Make your first change": simplified copy, note auto-deploy on publish, remove separate "View live" step.

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