Fixs some misspellings

Change-Id: I03d23d8acca8789b430f74fdac80d287f0fa59df
diff --git a/core/api/src/main/java/org/onosproject/net/statistic/StatisticService.java b/core/api/src/main/java/org/onosproject/net/statistic/StatisticService.java
index d8162ec..1bf30ca 100644
--- a/core/api/src/main/java/org/onosproject/net/statistic/StatisticService.java
+++ b/core/api/src/main/java/org/onosproject/net/statistic/StatisticService.java
@@ -27,7 +27,7 @@
 /**
  * Service for obtaining statistic information about link in the system.
  * Statistics are obtained from the FlowRuleService in order to minimize the
- * amount of hammering occuring at the dataplane.
+ * amount of hammering occurring at the dataplane.
  */
 public interface StatisticService {