message: Fixed sample.json of cleanup-completed-todos sample
diff: [
  {
  "name": "cleanup-completed-todos",
  - "version": null,
  "source": "pnp",
  "title": "Cleanup completed Microsoft To Do tasks",
  "url": "https://github.com/pnp/cli-microsoft365/tree/main/docs/docs/sample-scripts/todo/cleanup-completed-todos",
  "creationDateTime": "2021-04-09",
  "updateDateTime": "2021-04-09",
  "shortDescription": "This script iterates across all of the task lists and removes the tasks that have been marked as complete.",
  - "longDescription": "Microsoft To Do is my task management tool of choice, I use it for tracking everything I do, which means I generate and complete a lot of tasks during a working week. This script iterates across all of the task lists and removes the tasks that have been marked as complete.",
  + "longDescription": [
  + "Microsoft To Do is my task management tool of choice, I use it for tracking everything I do, which means I generate and complete a lot of tasks during a working week. This script iterates across all of the task lists and removes the tasks that have been marked as complete."
  + ],
  "products": [
  "Microsoft To Do"
  ],
  "type": "image",
  "order": 100,
  "url": "https://raw.githubusercontent.com/pnp/cli-microsoft365/main/docs/docs/sample-scripts/todo/cleanup-completed-todos/assets/preview.png",
  - "alt": "preview image for the sample",
  - "slides": null
  + "alt": "preview image for the sample"
  }
  ],
  "authors": [
  