build: note about cdi usage in WSL (#23304)

follow-up
#23069 (comment)

## Related issues or tickets

* docker/buildx#3320

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Signed-off-by: CrazyMax <[email protected]>

Author: crazy-max

content/manuals/build/building/cdi.md

@@ -38,6 +38,12 @@ in one of the following locations:
 > the `docker` driver, see [Configure CDI devices](/reference/cli/dockerd.md#configure-cdi-devices)
 > documentation.
 
+> [!NOTE]
+> If you are creating a container builder on WSL, you need to ensure that
+> [Docker Desktop](../../desktop/_index.md) is installed and [WSL 2 GPU Paravirtualization](../../desktop/features/gpu.md#prerequisites)
+> is enabled. Buildx v0.27+ is also required to mount the WSL libraries in the
+> container.
+
 ## Building with a simple CDI specification
 
 Let's start with a simple CDI specification that injects an environment variable