Fix typos detected by Frank Wang

Change-Id: I86b2e302569eff89d7051321a4531c7e0dc242f9
diff --git a/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/api/MQConstants.java b/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/api/MQConstants.java
index 5c9731f..540bdb1 100644
--- a/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/api/MQConstants.java
+++ b/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/api/MQConstants.java
@@ -109,7 +109,7 @@
     public static final String CHASIS_ID = "chassis_id";
 
     /**
-     * Specifies event occurence time.
+     * Specifies event occurrence time.
      */
     public static final String OCC_TIME = "occurrence_time";
 
@@ -129,9 +129,9 @@
     public static final String LOGICAL = "logical";
 
     /**
-     * Specifies packet recieved time.
+     * Specifies packet received time.
      */
-    public static final String RECIEVED = "received";
+    public static final String RECEIVED = "received";
 
     /**
      * Specifies message type.
diff --git a/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/impl/MQServiceImpl.java b/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/impl/MQServiceImpl.java
index 0ec5127..11b46fb 100644
--- a/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/impl/MQServiceImpl.java
+++ b/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/impl/MQServiceImpl.java
@@ -136,7 +136,7 @@
     /**
      * Publishes packet message to MQ server.
      *
-     * @param context Context of the packet recieved including details like mac, length etc
+     * @param context Context of the packet received including details like mac, length etc
      */
     @Override
     public void publish(PacketContext context) {
diff --git a/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/util/MQUtil.java b/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/util/MQUtil.java
index 0fbcab0..33aded4 100644
--- a/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/util/MQUtil.java
+++ b/apps/rabbitmq/src/main/java/org/onosproject/rabbitmq/util/MQUtil.java
@@ -144,7 +144,7 @@
         jo.addProperty(SWITCH_ID, pkt.receivedFrom().deviceId().toString());
         jo.addProperty(IN_PORT, pkt.receivedFrom().port().name());
         jo.addProperty(LOGICAL, pkt.receivedFrom().port().isLogical());
-        jo.addProperty(RECIEVED, new Date(context.time()).toString());
+        jo.addProperty(RECEIVED, new Date(context.time()).toString());
         jo.addProperty(MSG_TYPE, PKT_TYPE);
         // parse ethernet
         jo.addProperty(SUB_MSG_TYPE,