Update documentation

changelogs/unreleased/api-remove-owned-groups.yml

+---
+title: 'API: Remove /groups/owned endpoint'
+merge_request: 9505
+author: Robert Schilling

doc/api/groups.md

@@ -14,6 +14,7 @@ Parameters:
 | `order_by` | string | no | Order groups by `name` or `path`. Default is `name` |
 | `sort` | string | no | Order groups in `asc` or `desc` order. Default is `asc` |
 | `statistics` | boolean | no | Include group statistics (admins only) |
+| `owned` | boolean | no | Limit by groups owned by the current user |
 ```
 GET /groups
@@ -40,20 +41,6 @@ GET /groups
 You can search for groups by name or path, see below.
-## List owned groups
-
-Get a list of groups which are owned by the authenticated user.
-
-```
-GET /groups/owned
-```
-
-Parameters:
-
-| Attribute | Type | Required | Description |
-| --------- | ---- | -------- | ----------- |
-| `statistics` | boolean | no | Include group statistics |
-
 ## List a group's projects
 Get a list of projects in this group.

doc/api/v3_to_v4.md

@@ -41,3 +41,4 @@ changes are in V4:
 - Renamed `branch_name` to `branch` on DELETE `id/repository/branches/:branch` response [!8936](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8936)
 - Remove `public` param from create and edit actions of projects [!8736](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8736)
 - Notes do not return deprecated field `upvote` and `downvote` [!9384](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9384)
+- Remove `GET /groups/owned`. Use `GET /groups?owned=true` instead [!9505](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9505)