docs(styled textarea): change button size in with-button example

Author: maiieul

apps/website/src/routes/docs/styled/textarea/examples/with-button.tsx

@@ -5,7 +5,7 @@ export default component$(() => {
   return (
     <div class="grid w-full gap-2">
       <Textarea placeholder="Type your message here." />
-      <Button>Send message</Button>
+      <Button class="ml-auto w-40">Send message</Button>
     </div>
   );
 });