What does this PR do?

From #3572:

In #3308 we updated docs for two AWS integrations to align with the new documentation guidelines and establish the relationship between the AWS integration/package ("AWS") and integrations for individual AWS services (for example, "AWS CloudFront").

Now we should update the docs for all AWS integrations for individual services to follow the same format as the updated "AWS CloudFront" integration docs.

This PR adds more context the AWS integration including:

• Adds context to the "Overview" including a link to the relevant AWS page and an example
• Lists the types of "Data streams" for the service
• "Requirements" points back to "AWS" for detailed information on credentials and permissions
• "Requirements" includes any other service-specific requirements
• "Setup" establishes a relationship between the AWS integration/package ("AWS") and this integration
• Includes "Reference" sections

For the reviewer

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

Author's Checklist

• Review by docs team
• Review by integrations team

Related issues

• Update integration docs for individual AWS/Amazon services #3572