Fix toString in UPF UE Sessions and Terminations

Change-Id: I90c9d3180ba9cbbd688ccadd5734792c13504c56
diff --git a/core/api/src/main/java/org/onosproject/net/behaviour/upf/UpfTerminationUplink.java b/core/api/src/main/java/org/onosproject/net/behaviour/upf/UpfTerminationUplink.java
index 74dbc01..f759202 100644
--- a/core/api/src/main/java/org/onosproject/net/behaviour/upf/UpfTerminationUplink.java
+++ b/core/api/src/main/java/org/onosproject/net/behaviour/upf/UpfTerminationUplink.java
@@ -117,7 +117,7 @@
 
     @Override
     public String toString() {
-        return "TerminationDL{" + matchString() + "->" + actionString() + "}";
+        return "TerminationUL{" + matchString() + "->" + actionString() + "}";
     }
 
     private String matchString() {