simplelink: correct a comment in Makefile.cc13xx-cc26xx
CC13x2_CC26x2_PRE_RTM ?= 1
-# Core SDK is placed as a submodule under arch/cpu/cc13xx-cc26xx/lib.
+# Core SDK is placed as a submodule under arch/cpu/simplelink-cc13xx-cc26xx/lib.
# Do a sanity check that Core SDK submodule has been initialized.
ifndef CORE_SDK
CORE_SDK := $(CONTIKI_CPU)/lib/coresdk_cc13xx_cc26xx
