Fixed Og Image (#901)

### Description
Seems Like OG Image is not working on the recent blog example by lee
rob.

### Demo URL

### Type of Change

- [ ] New Example
- [ X] Example updates (Bug fixes, new features, etc.)
- [ ] Other (changes to the codebase, but not to examples)

### New Example Checklist

- [ ] 🛫 `npm run new-example` was used to create the example
- [ ] 📚 The template wasn't used but I carefuly read the [Adding a new
example](https://github.com/vercel/examples#adding-a-new-example) steps
and implemented them in the example
- [ ] 📱 Is it responsive? Are mobile and tablets considered?

solutions/blog/app/blog/[slug]/page.tsx

@@ -23,7 +23,7 @@ export function generateMetadata({ params }) {
     summary: description,
     image,
   } = post.metadata
-  let ogImage = image ? image : `/og?title=${encodeURIComponent(title)}`
+  let ogImage = image ? image : `${baseUrl}/og?title=${encodeURIComponent(title)}`
 
   return {
     title,