[DOC]Issues with multiple documents

[soghoyanaws]

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Issue 1: The documentation in the link suggests using a event_collect_timeout parameter is an option, but it is not. Is it called something else or does it not exist?
https://opensearch.org/docs/latest/data-prepper/pipelines/configuration/processors/aws-lambda/

Issue 2: the documentation doesn't really say what args lambda will receive and doesn't specify what exactly the lambda should return.
There's a basic example that shows a lambda return an array of events, but in our testing this does not work. it seems like the pipeline expects the lambda to return an object with the events nested under that same batch key_name.
https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-lambda.html

Issue 3: As far as the lambda processor for the Opensearch pipeline, the docs here suggest that you can give a max_retries parameter, but it results in an error as seen in the second image. The first picture is the config, which looks like this
processor:
- aws_lambda:
function_name: "{{lambda_name}}"
response_events_match: true
tags_on_failure: ["lambda_failure"]
batch:
key_name: "events"
max_retries: 0
aws:
region: us-east-1
sts_role_arn: "{{pipeline_iam_role_arn}}"
- drop_events:
drop_when: '(/drop == true)'

Version: List the OpenSearch version to which this issue applies, e.g. 2.14, 2.12--2.14, or all.

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.