Update shortcut for marking as skipped

src/components/ProgressHelpPopup.astro

@@ -38,7 +38,7 @@ import Popup from './Popup/Popup.astro';
             <kbd class="px-2 py-1.5 text-xs text-white bg-gray-900 rounded-md">Shift</kbd> + <kbd class="px-2 py-1.5 text-xs text-white bg-gray-900 rounded-md">Click</kbd> to mark as in progress.
           </li>
           <li class='text-sm leading-loose'>
-            <kbd class="px-2 py-1.5 text-xs text-white bg-gray-900 rounded-md">Option</kbd> + <kbd class="px-2 py-1.5 text-xs text-white bg-gray-900 rounded-md">Click</kbd> to mark as skipped.
+            <kbd class="px-2 py-1.5 text-xs text-white bg-gray-900 rounded-md">Option / Alt</kbd> + <kbd class="px-2 py-1.5 text-xs text-white bg-gray-900 rounded-md">Click</kbd> to mark as skipped.
           </li>
         </ul>
       </div>