fix(examples): dynamically update page title (#63110)
### What?
[blog-starter-kit](https://vercel.com/templates/next.js/blog-starter-kit)'s
page title does not update when navigating to a blog post.
### Why?
The `title` property was missing from:
```
return {
title, // missing
openGraph: {
title,
images: [post.ogImage.url],
},
};
```
Closes NEXT-[Page title is not dynamically updating #63083
](https://github.com/vercel/next.js/issues/63083)
Fixes #63083
