Update auth icon

apps/docs/docs/ref/self-hosting-auth/introduction.mdx

@@ -5,7 +5,7 @@ hideTitle: true
 ---
 
 <div className="flex items-start gap-6 not-prose" id="introduction">
-  <img src="/docs/img/icons/javascript-icon.svg" className="w-8 h-8 rounded" />
+  <img src="/docs/img/icons/menu/reference-auth" className="w-8 h-8 rounded" />
   <div className="flex flex-col gap-2">
     <h1 className="text-3xl text-scale-1200 m-0">Self-Hosting Auth</h1>
   </div>
@@ -23,6 +23,7 @@ hideTitle: true
   <RefSubLayout.Examples>
 
     ### Client libraries
+    
     - [JavaScript](https://github.com/supabase/gotrue-js)
     - [Dart](https://github.com/supabase/gotrue-dart)