1. - [x] Mandatory: Add the required version to the Fix version/s field.

2. - [x] Mandatory: Choose the type of documentation change or review.

• [x] We need to update to an existing topic

3. - [x] Mandatory: Find the link to where the documentation update
should go and add it to the recommended changes.

https://github.com/stolostron/rhacm-docs/blob/2.15_stage/governance/gatekeeper_operator/config_gk_operator.adoc

4. - [x] Mandatory for GA content:

• [x] Add steps, the diff, known issue, and/or other important
  conceptual information in the following space:

• Add the spec.mutatingWebhookConfig configuration, which configures and overrides configurations set in spec.webhook which applies to both the validating and mutating admission webhooks
• Add the timeoutSeconds configuration to spec.mutatingWebhookConfig and spec.webhook to configure the timeout for the webhooks
• Add spec.audit.podAnnotations to allow specifying annotations specifically to the Gatekeeper audit pod. The existing spec.podAnnotations configures both the audit and controller pods.

PR: https://github.com/stolostron/rhacm-docs/pull/8328

• [ ] Add verification at the end of the task, how does the user
  verify success (a command to run or a result to see?)

• [x] Add link to dev story here: Epic ACM-21997 , containing stories:
  • ACM-23809 - Separate configurations for gatekeeper validating and admission webhooks
  • ACM-25076 - Separate pod annotation configurations for Gatekeeper pods
  • ACM-23810 - Add configuration for webhook timeouts