Docs: Updated note about using next/head in basic-features/font-optimization (#39863)
Docs: Updated note about using next/head in basic-features/font-optimization (#39863)

## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js