docs: update DOCKER readme

Author: NGPixel

docker/README.md

@@ -4,6 +4,8 @@
 
 1. [Set up Docker](https://docs.docker.com/get-started/) on your preferred platform. On Windows, it is highly recommended to use the [WSL 2 *(Windows Subsystem for Linux)*](https://docs.docker.com/desktop/windows/wsl/) backend.
 
+> See the [IETF Tools Windows Dev guide](https://github.com/ietf-tools/.github/blob/main/docs/windows-dev.md) on how to get started when using Windows.
+
 2. On Linux, you must also install [Docker Compose](https://docs.docker.com/compose/install/). Docker Desktop for Mac and Windows already include Docker Compose.
 
 2. If you have a copy of the datatracker code checked out already, simply `cd` to the top-level directory.