docs: rename svelte 5 discord channel (#10431)

* rename svelte 5 discord channel

* changeset

* Delete .changeset/stupid-insects-help.md

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Co-authored-by: Rich Harris <hello@rich-harris.dev>

documentation/blog/2023-09-20-runes.md

@@ -220,4 +220,4 @@ This is just the beginning though. We have a long list of ideas for subsequent r
 
 You can't use Svelte 5 in production yet. We're in the thick of it at the moment and can't tell you when it'll be ready to use in your apps.
 
-But we didn't want to leave you hanging. We've created a [preview site](https://svelte-5-preview.vercel.app) with detailed explanations of the new features and an interactive playground. You can also visit the `#svelte-5-runes` channel of the [Svelte Discord](/chat) to learn more. We'd love to have your feedback!
+But we didn't want to leave you hanging. We've created a [preview site](https://svelte-5-preview.vercel.app) with detailed explanations of the new features and an interactive playground. You can also visit the `#svelte-5-alpha` channel of the [Svelte Discord](/chat) to learn more. We'd love to have your feedback!

sites/svelte-5-preview/src/routes/docs/content/02-examples/06-more-examples.md

@@ -4,4 +4,4 @@ title: More examples
 
 Check out [component-party.dev](https://component-party.dev/?f=svelte4,svelte5) to see side-by-side comparisons of some common patterns.
 
-We'll add more examples over time, but if there's something in particular you'd like to see then hop over to the `#svelte-5-runes` channel of the [Svelte Discord](https://svelte.dev/chat).
+We'll add more examples over time, but if there's something in particular you'd like to see then hop over to the `#svelte-5-alpha` channel of the [Svelte Discord](https://svelte.dev/chat).

sites/svelte-5-preview/src/routes/docs/content/03-appendix/01-faq.md

@@ -123,8 +123,8 @@ We appreciate your enthusiasm! Right now it's not possible to accept contributio
 
 ### How can I share feedback or cool examples of what this enables?
 
-You can use the `#svelte-5-runes` channel on the [Discord server](https://svelte.dev/chat) or the tag `#svelte-5-runes` on social media.
+You can use the `#svelte-5-alpha` channel on the [Discord server](https://svelte.dev/chat) or the tag `#svelte-5-alpha` on social media.
 
 ### My question wasn't answered. What gives?
 
-It must not have been asked frequently enough. To fix that, stop by the `#svelte-5-runes` channel of the [Discord server](https://svelte.dev/chat).
+It must not have been asked frequently enough. To fix that, stop by the `#svelte-5-alpha` channel of the [Discord server](https://svelte.dev/chat).