[docs] force externalize chatroom link (#7097)

site/content/blog/2019-04-22-svelte-3-rethinking-reactivity.md

@@ -94,4 +94,4 @@ We don't take this lightly: hopefully once you've experienced Svelte 3 you'll un
 
 As grueling as this release has been, we're nowhere near finished. We have a ton of ideas for generating smarter, more compact code, and a long feature wish-list. [Sapper](https://sapper.svelte.dev), our Next.js-style app framework, is still in the middle of being updated to use Svelte 3. The [Svelte Native](https://svelte-native.technology/) community project, which allows you to write Android and iOS apps in Svelte, is making solid progress but deserves more complete support from core. We don't yet have the bounty of editor extensions, syntax highlighters, component kits, devtools and so on that other frameworks have, and we should fix that. We *really* want to add first-class TypeScript support.
 
-But in the meantime we think Svelte 3 is the best way to build web apps yet. Take an hour to go through the [tutorial](/tutorial) and we hope to convince you of the same. Either way, we'd love to see you in our [Discord chatroom](/chat) and on [GitHub](https://github.com/sveltejs/svelte) — everyone is welcome, especially you.
+But in the meantime we think Svelte 3 is the best way to build web apps yet. Take an hour to go through the [tutorial](/tutorial) and we hope to convince you of the same. Either way, we'd love to see you in our [Discord chatroom](https://svelte.dev/chat) and on [GitHub](https://github.com/sveltejs/svelte) — everyone is welcome, especially you.

site/content/docs/00-introduction.md

@@ -6,6 +6,6 @@ This page contains detailed API reference documentation. It's intended to be a r
 
 If that's not you (yet), you may prefer to visit the [interactive tutorial](/tutorial) or the [examples](/examples) before consulting this reference.
 
-Don't be shy about asking for help in the [Discord chatroom](/chat).
+Don't be shy about asking for help in the [Discord chatroom](https://svelte.dev/chat).
 
 Using an older version of Svelte? Have a look at the [v2 docs](https://v2.svelte.dev).

site/content/tutorial/19-next-steps/01-congratulations/text.md

@@ -8,4 +8,4 @@ To get set up in your local development environment, check out [the quickstart g
 
 If you're looking for a more expansive framework that includes routing, server-side rendering and everything else, take a look at [SvelteKit](https://kit.svelte.dev).
 
-Most importantly: since you're now a member of the Svelte community, you should [join our friendly Discord chatroom](/chat). That's where you'll find fellow Svelte users, and it's where we plan the future of the framework.
+Most importantly: since you're now a member of the Svelte community, you should [join our friendly Discord chatroom](https://svelte.dev/chat). That's where you'll find fellow Svelte users, and it's where we plan the future of the framework.