[EKS] [AddOn configuration values documentation]: web documentation for the configuration values for AddOns

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**Tell us about your request**
I can find the configuration schema an EKS AddOn as follows:
```
$ aws eks describe-addon-configuration --addon-name aws-ebs-csi-driver --addon-version v1.21.0-eksbuild.1 --query configurationSchema --output text | jq .
```
This gives me some JSON Schema that describes the configuration values I can pass to an addon.

This does give me all the information, but in a way that is extremely hard to parse as a human.

AWS should host this in a human readable format. By comparison, see the table on https://artifacthub.io/packages/helm/aws/aws-cloudwatch-metrics

**Which service(s) is this request for?**
EKS

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
Reading JSON Schema to determine how to configure an addon is hard. Reading it on a web page would be better.

**Are you currently working around this issue?**
Reading JSON Schema from `aws eks describe-addon-configuration`.

The request names the EKS AddOn configuration schema returned by `aws eks describe-addon-configuration` and compares it with the linked Artifact Hub presentation. Start by reviewing that command's `configurationSchema` output and the referenced web table. Done means AWS provides the AddOn configuration values in a human-readable web format.

Written by the indexing model from the issue text.