Correction for confirm example (#3296)

Author: scrhartley

www/content/examples/confirm.md

@@ -37,9 +37,9 @@ which is then picked up by `hx-trigger`.
 <script>
   document.addEventListener("htmx:confirm", function(e) {
     // The event is triggered on every trigger for a request, so we need to check if the element
-    // that triggered the request has a hx-confirm attribute, if not we can return early and let
-    // the default behavior happen
-    if (!e.detail.elt.hasAttribute('hx-confirm')) return
+    // that triggered the request has a confirm question set via the hx-confirm attribute,
+    // if not we can return early and let the default behavior happen
+    if (!e.detail.question) return
 
     // This will prevent the request from being issued to later manually issue it
     e.preventDefault()