Clearer documentation on layer versions

[mbonig]

Expected Behavior

I'd expect to go to the Datadog docs (https://docs.datadoghq.com/serverless/libraries_integrations/cdk/#configuration) and see clear guidance on how to find and set the various layer versions.

Actual Behavior

The docs point to a GitHub releases page for the pythonLayerVersion. However, the current versioning (e.g. v6.111.0) cannot be entered as the prop is a number, so it has to be figured out that it's the minor version (111) that is entered. Additionally, finding the proper extensionLayerVersion requires multiple hops that are rather unguided.

Steps to Reproduce the Problem

1. Go to the docs (https://docs.datadoghq.com/serverless/libraries_integrations/cdk/#configuration)
2. Read the docs
3. try to figure out which version of each layer to use

Specifications

• Datadog Lambda Layer version: 2.6.0
• Node version: 24.0.2

Stacktrace

None