usage updated

README.md

@@ -16,7 +16,7 @@ use minecraft_auth::bedrock;
 
 #[tokio::main]
 async fn main() {
-    let mut bedrock = bedrock::new("1.21.2".to_string(), false); // (client version, debug mode)
+    let mut bedrock = bedrock::new("1.21.40".to_string(), false); // (client version, debug mode)
     if bedrock.auth().await {
         let chain = bedrock.get_chain_data();
         let ec_key = bedrock.get_ec_key().unwrap(); // When sending the Login Packet we will need this