dvtm: move to Terminal submenu

Part of a wider housekeeping effort on the packages repository.

Signed-off-by: Alberto Bursi <alberto.bursi@outlook.it>

utils/dvtm/Makefile

@@ -24,6 +24,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/dvtm
   SECTION:=utils
   CATEGORY:=Utilities
+  SUBMENU:=Terminal
   DEPENDS:=+libncursesw
   TITLE:=dynamic virtual terminal manager
   URL:=http://www.brain-dump.org/projects/dvtm/