RSS feed broken

[Aquilosion]

The recent blog post, Svelte <3 TypeScript, breaks the RSS feed because the < isn't sanitised, it produces this:

<title>Svelte<3 TypeScript</title>

The offending lines are here, it looks like the <description> tag needs sanitising as well:

https://github.com/sveltejs/v2.svelte.dev/blob/b21e7b90ad7f2d62556eba660314e7238a22ce4a/src/routes/blog/rss.xml.js#L25-L27

[Conduitry]

Moving this over to the main Svelte repo, where the current site lives.

The relevant code is at https://github.com/sveltejs/svelte/blob/999b1f4cdb37f7d529d71a9f35de44b3fb90bfb4/site/src/routes/blog/rss.xml.js - each of these strings we're using here need to be escaped for HTML.