Update FetchDataSteps.tsx (#30360)

examples/auth/nextjs/components/tutorial/FetchDataSteps.tsx

@@ -18,7 +18,7 @@ const server = `
 import { createClient } from '@/utils/supabase/server'
 
 export default async function Page() {
-  const supabase = createClient()
+  const supabase = await createClient()
   const { data: notes } = await supabase.from('notes').select()
 
   return <pre>{JSON.stringify(notes, null, 2)}</pre>