fix Makefile

Makefile

@@ -3,7 +3,7 @@
 version:
 	go run main.go generate
 	sed -i.bak 's/package\ cmd/package\ api/g' version_vars.go
-	mv version_vars.go api/version_vars.go
+	mv version_vars.go xxdk/version_vars.go
 
 clean:
 	rm -rf vendor/