Fix maintenance page links for validator

Author: jvinodraj

maintenance.html

@@ -130,7 +130,7 @@ <h1 id="maintenance-title">We are updating this section of our website.</h1>
     </p>
 
     <section class="meta" aria-label="Maintenance details">
-      <p><strong>Expected return:</strong> Please check back soon.</p>
+      <p><strong>Expected return:</strong> June 30, 2026.</p>
       <p><strong>Need assistance now?</strong> Reach us at <a href="mailto:vinodraj.j@gmail.com">vinodraj.j@gmail.com</a>.</p>
     </section>