[Update] Response action / rule types

[caitlinbetz]

What can we change to make the docs better?

We previously updated docs to include new rule types for automated response actions (serverless) (see: https://github.com/elastic/security-docs-internal/issues/40). However, we now support all rule types with osquery/defend response actions.

We can remove the requirement text stating that automated actions can only be configured for certain rule types:

You can only add automated response actions to custom query, event correlation (EQL), new terms, and ES|QL type rules.

Doc URL

Please include the doc URL and any other related information where applicable:
Doc URL: ESS | Serverless
Github issue link(s)/Other resources: https://github.com/elastic/security-docs-internal/issues/40

Which documentation set needs improvement?

ESS and serverless

Software version

8.16

[caitlinbetz]

cc @tomsonpl