ran code formatter

Author: edoardocomar

prometheus-metrics-core/src/main/java/io/prometheus/metrics/core/util/Scheduler.java

@@ -15,9 +15,11 @@ public class Scheduler {
 
   private static class DaemonThreadFactory implements ThreadFactory {
     private static int threadNum;
+
     private static synchronized int nextThreadNum() {
       return threadNum++;
     }
+
     @Override
     public Thread newThread(Runnable runnable) {
       Thread thread = new Thread(runnable, "prometheus-metrics-scheduler-" + nextThreadNum());