chore(website): use new discord theme color (#2096)

Author: SuperchupuDev

website/src/content/docs/index.mdx

@@ -202,7 +202,7 @@ import LinterExample from "@/components/linter/example.md";
       </a>
       <a href="https://github.com/biomejs/biome" class="github">
         <Icon name="github" />
-        <p>Github</p>
+        <p>GitHub</p>
       </a>
       <a href="https://twitter.com/biomejs" class="x">
         <Icon name="x.com" />

website/src/styles/_overrides.scss

@@ -15,7 +15,7 @@
   --sl-hue-blue: 210;
   --sl-community-link: #ffffff;
   --sl-perf-progress: #60a5fa;
-  --sl-discord: #7289da;
+  --sl-discord: #5865f2;
   --sl-mastodon: #6364ff;
 }
 
@@ -35,7 +35,7 @@
   --sl-hue-blue: 234;
   --sl-community-link: #ffffff;
   --sl-perf-progress: #60a5fa;
-  --sl-discord: #7289da;
+  --sl-discord: #5865f2;
   --sl-mastodon: #6364ff;
 }
 
@@ -140,4 +140,4 @@
 
 .content-panel {
   overflow: hidden;
-}
+}