minor fix

provider/wks-azure/src/main/java/org/opengroup/osdu/wks/provider/azure/pubsub/MessageHandler.java

@@ -31,7 +31,7 @@ public class MessageHandler implements IMessageHandler {
 
     @Override
     public void notifyException(Throwable throwable, ExceptionPhase exceptionPhase) {
-        LOGGER.error(exceptionPhase + "-" + throwable.getMessage());
+        LOGGER.error("{} - {}", exceptionPhase, throwable.getMessage());
     }
 
 }