Update app-story-with-mock.js.mdx
Update app-story-with-mock.js.mdx

Add missing closing `}`
storybooks/storybook,storybooks/storybook,storybooks/storybook,kadirahq/react-storybook,storybooks/storybook,kadirahq/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook