Remove typography.md stub and update component docs index

[shubham30vatsal]

What changed

• Removed docs/components/typography.md, which only redirected readers to content.md and did not document any components on its own.
• Removed the Typography row from the Categories table in docs/components/README.md so the index no longer links to that stub.

Why

The typography doc was redundant: Heading, Paragraph, and other text-oriented components are already listed under the Content category (content.md). Keeping a separate “Typography” entry pointed people at an extra hop with no unique content. Removing the stub and table row makes the components index accurate and easier to maintain.

Fixes #4

Checklist

• npx tsc --noEmit passes
• npx vitest run passes
• New exports added to src/index.ts
• Documentation updated in docs/