update with footer link for v5/v6

Author: bluebill1049

src/components/Footer.module.css

@@ -34,7 +34,7 @@
 .links > li > a {
   text-decoration: none;
   color: var(--color-text);
-  padding: 10px 12px;
+  padding: 10px 8px;
   min-width: 48px;
   min-height: 48px;
 }

src/components/Footer.tsx

@@ -39,6 +39,12 @@ export default function Footer() {
         <li>
           <Link href="/media">Media</Link>
         </li>
+        <li>
+          <Link href="https://react-hook-form-website-git-v6-v5-hook-form.vercel.app/v6/api">V6</Link>
+        </li>
+        <li>
+          <Link href="https://react-hook-form-website-git-v6-v5-hook-form.vercel.app/v5/api">V5</Link>
+        </li>
       </ul>
       <p>
         A project by{" "}