final code reviews

indexing-service/src/main/java/io/druid/indexing/overlord/ImmutableZkWorker.java

@@ -66,4 +66,4 @@ public class ImmutableZkWorker
     return (worker.getCapacity() - getCurrCapacityUsed() >= task.getTaskResource().getRequiredCapacity()
             && !getAvailabilityGroups().contains(task.getTaskResource().getAvailabilityGroup()));
   }
-}
+}

indexing-service/src/main/java/io/druid/indexing/worker/Worker.java

@@ -76,7 +76,7 @@ public class Worker
     return "Worker{" +
            "host='" + host + '\'' +
            ", ip='" + ip + '\'' +
-           ",  capacity=" + capacity +
+           ", capacity=" + capacity +
            ", version='" + version + '\'' +
            '}';
   }