chore; fixing code review commenta and fix the import path

packages/app/src/plugins.ts

@@ -13,7 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { plugin as HomePagePlugin } from '@backstage/plugin-home-page';
-import { plugin as WelcomePlugin } from '@backstage/plugin-welcome';
-import { plugin as LighthousePlugin } from '@backstage/plugin-lighthouse';
-export { HomePagePlugin, WelcomePlugin, LighthousePlugin };
+export { plugin as HomePagePlugin } from '@backstage/plugin-home-page';
+export { plugin as WelcomePlugin } from '@backstage/plugin-welcome';
+export { plugin as LighthousePlugin } from '@backstage/plugin-lighthouse';

packages/cli/templates/default-app/packages/app/src/plugins.ts

@@ -1 +1 @@
-export { default as WelcomePlugin } from 'plugin-welcome';
+export { plugin as WelcomePlugin } from 'plugin-welcome';