Improve details on queue_selector rename

doc/administration/job_logs.md

@@ -50,7 +50,7 @@ these steps to move the logs to a new location without losing any data.
    Jobs in progress are not affected, based on how [data flow](#data-flow) works.
 
    ```ruby
-   sidekiq['experimental_queue_selector'] = true
+   sidekiq['queue_selector'] = true
    sidekiq['queue_groups'] = [
      "feature_category!=continuous_integration"
    ]

doc/administration/operations/extra_sidekiq_processes.md

@@ -114,7 +114,7 @@ you list:
 
 > - [Introduced](https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/45) in [GitLab Starter](https://about.gitlab.com/pricing/) 12.8.
 > - [Sidekiq cluster including queue selector moved](https://gitlab.com/groups/gitlab-com/gl-infra/-/epics/181) to GitLab [Core](https://about.gitlab.com/pricing/#self-managed) in GitLab 12.10.
-> - [Marked as supported](https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/147) in GitLab [Core](https://about.gitlab.com/pricing/#self-managed) in GitLab 13.6. Renamed from `experimental_queue_selector` to `queue_selector`.
+> - [Renamed from `experimental_queue_selector` to `queue_selector`](https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/147) in GitLab 13.6.
 
 In addition to selecting queues by name, as above, the `queue_selector`
 option allows queue groups to be selected in a more general way using

doc/administration/pages/index.md

@@ -501,7 +501,7 @@ the below steps to do a no downtime transfer to a new storage location.
 1. Pause Pages deployments by setting the following in `/etc/gitlab/gitlab.rb`:
 
    ```ruby
-   sidekiq['experimental_queue_selector'] = true
+   sidekiq['queue_selector'] = true
    sidekiq['queue_groups'] = [
      "feature_category!=pages"
    ]