Update prettier in group doctor to the latest version � (#916)
Update prettier in group doctor to the latest version � (#916)

Summary:
***
☝️ **Important announcement:** Greenkeeper will be saying goodbye 👋 and passing the torch to Snyk on June 3rd, 2020! [Find out how to migrate to Snyk and more at greenkeeper.io](https://greenkeeper.io)
***
## The devDependency [prettier](https://github.com/prettier/prettier) was updated from `1.19.1` to `2.0.0`.
This version is **not covered** by your **current version range**.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

 ---

**Publisher:** [thorn0](https://www.npmjs.com/~thorn0)
**License:** MIT

[Find out more about this release](https://github.com/prettier/prettier).

 ---

<details>
  <summary>FAQ and help</summary>

  There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html). If those don’t help, you can always [ask the humans behind Greenkeeper](https://github.com/greenkeeperio/greenkeeper/issues/new).
</details>

 ---

Your [Greenkeeper](https://greenkeeper.io) bot :palm_tree:
Pull Request resolved: https://github.com/facebook/flipper/pull/916

Reviewed By: jknoxville

Differential Revision: D20594930

Pulled By: passy

fbshipit-source-id: 5c5eb01c79c184e6ed61dab6a701bddf97e773aa

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper