fix: orchestrator onboarding logs (dfinity#3588)

Author: andrewbattat

rs/orchestrator/src/orchestrator.rs

@@ -123,7 +123,7 @@ impl Orchestrator {
             1,
         );
 
-        UtilityCommand::notify_host("\nONBOARDING NOT YET COMPLETE:\nPlease wait for a 'Join request successful!' message confirming a successful onboarding...\n", 3);
+        UtilityCommand::notify_host("\nONBOARDING MAY NOT YET BE COMPLETE:\nIf a 'Join request successful!' message has NOT yet been logged, please wait for up to 10 minutes...\n", 3);
 
         let version = replica_version.clone();
         thread::spawn(move || loop {