Update RequestCacheStats.java

Author: kiranprakash154

server/src/main/java/org/opensearch/index/cache/request/RequestCacheStats.java

@@ -54,6 +54,7 @@ public class RequestCacheStats implements Writeable, ToXContentFragment {
     private long evictions;
     private long hitCount;
     private long missCount;
+    
 
     public RequestCacheStats() {}