docs: add Prismic employee section

CONTRIBUTING.md

@@ -2,6 +2,25 @@
 
 This package is primarily maintained by [Prismic](https://prismic.io). External contributions are welcome. Ask for help by [opening an issue](https://github.com/prismicio/prismic-client/issues/new/choose), or request a review by opening a pull request.
 
+<details><summary><strong>For Prismic employees</strong></summary>
+
+This package is maintained by the DevX team. Ask for help or a review in the [#team-devx](https://prismic-team.slack.com/archives/C014VAACCQL) Slack channel.
+
+> [!NOTE]
+> It's highly recommended to discuss your changes with the DevTools team ([#team-dev-tools](https://prismic-team.slack.com/archives/CPG31MDL1)) before starting.
+>
+> A short discussion can accellerate your work and ship it faster.
+
+> [!IMPORTANT]
+> Code should be reviewed by the DevTools team before merging.
+>
+> Request a review in the [#team-dev-tools](https://prismic-team.slack.com/archives/CPG31MDL1) Slack channel.
+
+> [!CAUTION]
+> Ask the DevTools team for [npm](https://www.npmjs.com) publish access before continuing.
+
+</details>
+
 ## :gear: Setup
 
 <!-- When applicable, list system requriements to work on the project. -->