build: fix typo
Braces numbers are mis-matched. Let's remove unnecessary one.
@@ -152,7 +152,7 @@ CONTEXTDIRS += wqueue
#ifeq ($(CONFIG_ENABLE_IOTIVITY),y)
#CONTEXTDIRS += $(EXTDIR)$(DELIM)iotivity
#endif
-ifeq ($(CONFIG_STDK_IOT_CORE),y))
+ifeq ($(CONFIG_STDK_IOT_CORE),y)
CONTEXTDIRS += $(EXTDIR)$(DELIM)stdk
endif
USERDIRS =
