Chapter 10: Implementing Partial Prerendering presents an outdated next.config.ts experimental config option

[jfrumar]

Under the heading Implementing Partial Prerendering, the config needs to be updated. Currently when running pnpm dev one receives:

> dev
> next dev --turbopack

[Error: `experimental.ppr` has been merged into `experimental.cacheComponents`. 
The Partial Prerendering feature is still available, but is now enabled via `experimental.cacheComponents`. 
Please update your next.config.ts accordingly.]

It appears that:

const nextConfig: NextConfig = {
  experimental: {
    ppr: 'incremental'
  }
};

should be changed to:

const nextConfig: NextConfig = {
  experimental: { 
    cacheComponents: true, 
  }
};