[DOC] The docs on aws_lambda.invocation_type are wrong

[rpash]

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The documents for the AWS Lambda processor for the Ingestion Pipeline are wrong. They state:

invocation_type | String | Required | Specifies the invocation type, either request-response or event. Default is request-response.

Not only is this field not required, it is not allowed. Attempting to deploy a pipeline with such a configuration via CDK results in the following error:

Resource handler returned message: 
  "pipelineConfigurationBody is invalid with the following errors: [ValidationMessage(message=
    "aws_lambda.invocation_type" is an invalid parameter, and should be removed for Amazon OpenSearch Ingestion pipelines using an aws_lambda processor: ...

Version: List the OpenSearch version to which this issue applies, e.g. 2.14, 2.12--2.14, or all.
2

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
Any ingestion pipeline with an aws_lambda processor

[Naarcha-AWS]

@rpash: Submitted a PR that should address this issue, #9895. Let me know if that addresses the issue.

[rpash]

The PR adds some confusion actually. Why is the invocation_type field in the docs if it is not supported?