Fix missing parameter in example code

README.md

@@ -47,7 +47,7 @@ Using Cloudflare's API:
 ```rust
         // Create a new Cloudflare client
         let client =
-            DnsUpdater::new_cloudflare("<API_TOKEN>", None::<String>)
+            DnsUpdater::new_cloudflare("<API_TOKEN>", None::<String>, Some(Duration::from_secs(60)))
                 .unwrap();
 
         // Create a new TXT record