Fix a typo in manufacturerDescription() method name

Change-Id: I8f95c6c0aa1ac6c59644828ddf2b82eea4c380a3
diff --git a/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java b/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java
index 245661c..2e49152 100644
--- a/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java
+++ b/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java
@@ -381,7 +381,7 @@
         }
 
         @Override
-        public String manfacturerDescription() {
+        public String manufacturerDescription() {
             return null;
         }