Normalize MAKEDIR, ONF_MAKEDIR and ONF_MAKE
Change-Id: I3908c0738dbbed180d62dc0f4ba656226035ba5a
diff --git a/makefiles/targets/clean.mk b/makefiles/targets/clean.mk
index f787e5c..f504dec 100644
--- a/makefiles/targets/clean.mk
+++ b/makefiles/targets/clean.mk
@@ -14,7 +14,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
#
-# SPDX-FileCopyrightText: 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
# SPDX-License-Identifier: Apache-2.0
# -----------------------------------------------------------------------