Merge #1672

1672: docs: add missing peer-deps of jest-preset-hops r=herschel666 a=herschel666

<details>
<summary>Bors merge bot cheat sheet</summary>

We are using [bors-ng](https://github.com/bors-ng/bors-ng) to automate merging of our pull requests. The following table provides a summary of commands that are available to reviewers (members of this repository with push access) and delegates (in case of `bors delegate+` or `bors delegate=[list]`).

| Syntax | Description |
| --- | --- |
| bors merge | Run the test suite and push to master if it passes. Short for "reviewed: looks good." |
| bors merge- | Cancel an r+, r=, merge, or merge= |
| bors try | Run the test suite without pushing to master. |
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| bors delegate+ | Allow the pull request author to merge their changes. |
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This is a short collection of opinionated commands. For a full list of the commands read the [bors reference](https://bors.tech/documentation/).

</details>


Co-authored-by: Emanuel Kluge <[email protected]>

DOCUMENTATION.md

@@ -1000,7 +1000,7 @@ Hops uses webpack to configure and instrument your application. However, test ru
 Install it to your project:
 
 ```shell
-npm install --save-dev jest-preset-hops jest
+npm install --save-dev jest-preset-hops jest babel-jest ts-jest
 ```
 
 Add `jest-preset-hops` as [preset](https://facebook.github.io/jest/docs/en/configuration.html#preset-string) to your Jest config. This can for example be done by adding it to your package.json.