Remove "TODO update the template, it needs... some work" in Svelte for new developers

[DarrenTsung]

I am reading the blog post linked in the tutorial: "Svelte for new developers" (https://svelte.dev/blog/svelte-for-new-developers) and it looks like there was a TODO left in the blog post that does not inspire confidence in the Svelte template / tutorial.

The relevant code is here:
https://github.com/sveltejs/svelte/blame/master/site/content/blog/2019-04-16-svelte-for-new-developers.md#L77

Is the template up to standards now? Maybe it is time to remove this TODO.