This is a dynamically generated template for the blog post you just clicked.
In a real production environment, you would fetch real Markdown or HTML content
from a database or a local .md file based on the unique URL parameter: .
SvelteKit uses a powerful bracket syntax for routing. Creating a folder named [slug] tells the router to catch any URL string typed
after /blog/ and automatically render this file.
Once inside this file, you can read the exact URL param to fetch the real article
data on the server side using a +page.server.ts load function.