Update S3IntegrationTestBase.java (#4079)

Author: zoewangg

services-custom/s3-transfer-manager/src/it/java/software/amazon/awssdk/transfer/s3/S3IntegrationTestBase.java

@@ -118,7 +118,7 @@ private static void createBucket(String bucketName, int retryCount) {
             if (e.awsErrorDetails().errorCode().equals("BucketAlreadyOwnedByYou")) {
                 System.err.printf("%s bucket already exists, likely leaked by a previous run\n", bucketName);
             } else if (e.awsErrorDetails().errorCode().equals("TooManyBuckets")) {
-                System.err.println("Printing all buckets for debug:");
+                System.err.println("Error: TooManyBuckets. Printing all buckets for debug:");
                 s3.listBuckets().buckets().forEach(System.err::println);
                 if (retryCount < 2) {
                     System.err.println("Retrying...");