update schema for secondary-endpoint library in module template

templates/module/angular/projects/my-project-name/config/ng-package.json

@@ -1,6 +1,5 @@
 {
-  "$schema": "../../../node_modules/ng-packagr/ng-package.schema.json",
+  "$schema": "../../../node_modules/ng-packagr/ng-entrypoint.schema.json",
-  "dest": "../../dist/my-project-name/config",
   "lib": {
     "entryFile": "src/public-api.ts"
   }