Update documentation to use the new SSOT for delayed project deletion

doc/api/projects.md

@@ -2099,6 +2099,10 @@ This endpoint:
 
 - Deletes a project including all associated resources (including issues and
   merge requests).
+- In [GitLab 12.6](https://gitlab.com/gitlab-org/gitlab/-/issues/32935) and later, on
+  [Premium or higher](https://about.gitlab.com/pricing/) tiers,
+  [delayed project deletion](../user/project/settings/index.md#delayed-project-deletion)
+  is applied if enabled.
 - From [GitLab 13.2](https://gitlab.com/gitlab-org/gitlab/-/issues/220382) on
   [Premium or higher](https://about.gitlab.com/pricing/) tiers, group
   administrators can [configure](../user/group/index.md#enable-delayed-project-deletion)

doc/user/admin_area/settings/visibility_and_access_controls.md

@@ -97,8 +97,8 @@ delete a project. To allow only users with the Administrator role to delete proj
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/255449) in GitLab 14.2 for groups created after August 12, 2021.
 
-Projects in a group (but not a personal namespace) can be deleted after a delayed period.
-You can [configure it in group settings](../../group/index.md#enable-delayed-project-deletion).
+[Delayed project deletion](../../project/settings/index.md#delayed-project-deletion) allows projects in a group (not a personal namespace)
+to be deleted after a period of delay.
 
 To enable delayed project deletion by default in new groups:
 
@@ -110,14 +110,13 @@ To enable delayed project deletion by default in new groups:
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/32935) in GitLab 12.6.
 
 By default, a project marked for deletion is permanently removed with immediate effect.
+See [delayed project deletion](../../project/settings/index.md#delayed-project-deletion) to learn more.
 By default, a group marked for deletion is permanently removed after seven days.
 
 WARNING:
 The default behavior of [Delayed Project deletion](https://gitlab.com/gitlab-org/gitlab/-/issues/32935) in GitLab 12.6 was changed to
 [Immediate deletion](https://gitlab.com/gitlab-org/gitlab/-/issues/220382) in GitLab 13.2.
 
-Projects in a group (but not a personal namespace) can be deleted after a delayed period, by
-[configuring in Group Settings](../../group/index.md#enable-delayed-project-deletion).
 The default period is seven days, and can be changed. Setting this period to `0` enables immediate removal
 of projects or groups.
 

doc/user/group/index.md

@@ -672,12 +672,9 @@ To disable group mentions:
 > - [Inheritance and enforcement added](https://gitlab.com/gitlab-org/gitlab/-/issues/321724) in GitLab 13.11.
 > - [Instance setting to enable by default added](https://gitlab.com/gitlab-org/gitlab/-/issues/255449) in GitLab 14.2.
 
-Projects can be configured to be deleted either:
-
-- Immediately.
-- After a delayed interval. During this interval period, the projects are in a read-only state
-  and can be restored. The default interval period is seven days but
-  [is configurable](../admin_area/settings/visibility_and_access_controls.md#default-deletion-delay).
+[Delayed project deletion](../project/settings/index.md#delayed-project-deletion) can be enabled for groups. When enabled, projects in
+the group are deleted after a period of delay. During this period, projects are in a read-only state and can be restored. The default
+period is seven days but [is configurable at the instance level](../admin_area/settings/visibility_and_access_controls.md#default-deletion-delay).
 
 On self-managed GitLab, projects are deleted immediately by default.
 In GitLab 14.2 and later, an administrator can

doc/user/project/working_with_projects.md

@@ -248,7 +248,7 @@ To delete a project, first navigate to the home page for that project.
 1. Click **Delete project**
 1. Confirm this action by typing in the expected text.
 
-Projects in personal namespaces are deleted immediately on request. For information on delayed deletion of projects in a group, please see [Enable delayed project deletion](../group/index.md#enable-delayed-project-deletion).
+Projects in personal namespaces are deleted immediately on request. For information on delayed deletion of projects in a group, please see [delayed project deletion](settings/index.md#delayed-project-deletion).
 
 ## Project settings