chore(create-next-app): update README links (#65634)
## Why?
- Update
`https://github.com/vercel/next.js/tree/canary/packages/create-next-app`
link to `https://nextjs.org/docs/app/api-reference/create-next-app` or
`https://nextjs.org/docs/pages/api-reference/create-next-app`
