YARN-11267. Fix CheckStyle.

Author: slfan1989

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/webapp/TestFederationInterceptorREST.java

@@ -535,7 +535,7 @@ public void testGetApplicationWrongFormat() {
  IllegalArgumentException illegalArgumentException =
  assertThrows(IllegalArgumentException.class, () -> {
  interceptor.getApp(null, "Application_wrong_id", null);
- });
+  });
  assertTrue(illegalArgumentException.getMessage().contains(
  "Invalid ApplicationId prefix: Application_wrong_id."));
  }