Using AWS resource detector with Python auto-instrumentation

[abstractOwl]

Hello, I opened an issue regarding this on the opentelemetry-python-contrib repo but thought it would also be relevant here since it would be helpful to add instructions to this documentation.

I am trying to use the new OTEL_EXPERIMENTAL_RESOURCE_DETECTORS environment variable (introduced in open-telemetry/opentelemetry-python#3181) with the AWS resource detectors in opentelemetry-sdk-extension-aws but it is not detecting the resource detectors.

Please see this issue for more information: open-telemetry/opentelemetry-python-contrib#2370