fix error handling bug

discordwebhookmanager/index.html

@@ -73,7 +73,7 @@
                         })
                     });
 
-                    if (res.status !== 200) {
+                    if (res.status !== 204) {
                         alert(`Request failed with status code ${res.status} and content "${await res.text()}" (POST ${webhook.url})`);
                         return;
                     }