Update site/content/docs/5.3/dark-mode.md

Co-authored-by: Louis-Maxime Piton <louismaxime.piton@orange.com>

site/content/docs/5.3/dark-mode.md

@@ -768,7 +768,7 @@ Additional variables for dark-mode (temporary)
     <ul class="dropdown-menu" data-bs-theme="dark">
       <li><a class="dropdown-item" href="#">Action</a></li>
       <li><a class="dropdown-item" href="#">Another action</a></li>
-      <li><a class="dropdown-item disabled" aria-disabled="true"">Something else here</a></li>
+      <li><a class="dropdown-item disabled" aria-disabled="true">Something else here</a></li>
       <li><hr class="dropdown-divider"></li>
       <li><a class="dropdown-item" href="#">Separated link</a></li>
     </ul>