Normalize MAKEDIR, ONF_MAKEDIR and ONF_MAKE

Change-Id: I3908c0738dbbed180d62dc0f4ba656226035ba5a
diff --git a/makefiles/lint/include.mk b/makefiles/lint/include.mk
index 17c4083..787e146 100644
--- a/makefiles/lint/include.mk
+++ b/makefiles/lint/include.mk
@@ -1,9 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
-# -----------------------------------------------------------------------
-# https://gerrit.opencord.org/plugins/gitiles/onf-make
-# ONF.makefile.version = 1.1
+# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
 # -----------------------------------------------------------------------
 
 $(if $(DEBUG),$(warning ENTER))
diff --git a/makefiles/lint/shell.mk b/makefiles/lint/shell.mk
index 704038c..a02da31 100644
--- a/makefiles/lint/shell.mk
+++ b/makefiles/lint/shell.mk
@@ -34,7 +34,7 @@
 shell-check      := shellcheck
 
 shell-check-args += --check-sourced
-shell-check-args += --external-sources
+shell-check-args += --extenal-sources
 
 ##-------------------##
 ##---]  TARGETS  [---##