changed var name to fit naming convention

northbound/server/core.go

@@ -102,11 +102,11 @@ func (s core) DeletePnd(ctx context.Context, request *pb.DeletePndRequest) (*pb.
 	start := metrics.StartHook(labels, grpcRequestsTotal)
 	defer metrics.FinishHook(labels, start, grpcRequestDurationSecondsTotal, grpcRequestDurationSeconds)
 
-	pndId, err := uuid.Parse(request.Pid)
+	pndID, err := uuid.Parse(request.Pid)
 	if err != nil {
 		return nil, handleRPCError(labels, err)
 	}
-	pndc.Delete(pndId)
+	pndc.Delete(pndID)
 
 	return &pb.DeletePndResponse{
 		Timestamp: time.Now().UnixNano(),