fix: typo in cypress

cypress/platform/xss18.html

@@ -84,7 +84,7 @@
         div.className = 'malware';
         div.innerHTML = 'XSS Succeeded';
         document.getElementsByTagName('body')[0].appendChild(div);
-        throw new Error('XSS Succeded');
+        throw new Error('XSS Succeeded');
       }
 
       var diagram = `classDiagram
@@ -102,4 +102,3 @@ mermaid.render('diagram', diagram, (res) => {
     </script>
   </body>
 </html>
-