Added merge_pipelines_enabled and merge_trains_enabled to REST API docs

doc/api/projects.md

@@ -1238,8 +1238,10 @@ POST /projects
 | `jobs_enabled`                                              | boolean | **{dotted-circle}** No | _(Deprecated)_ Enable jobs for this project. Use `builds_access_level` instead. |
 | `lfs_enabled`                                               | boolean | **{dotted-circle}** No | Enable LFS. |
 | `merge_method`                                              | string  | **{dotted-circle}** No | Set the [merge method](#project-merge-method) used. |
+| `merge_pipelines_enabled`                                   | boolean | **{dotted-circle}** No | Enable or disable merge pipelines. |
 | `merge_requests_access_level`                               | string  | **{dotted-circle}** No | One of `disabled`, `private`, or `enabled`. |
 | `merge_requests_enabled`                                    | boolean | **{dotted-circle}** No | _(Deprecated)_ Enable merge requests for this project. Use `merge_requests_access_level` instead. |
+| `merge_trains_enabled`                                      | boolean | **{dotted-circle}** No | Enable or disable merge trains. |
 | `mirror_trigger_builds` **(PREMIUM)**                       | boolean | **{dotted-circle}** No | Pull mirroring triggers builds. |
 | `mirror` **(PREMIUM)**                                      | boolean | **{dotted-circle}** No | Enables pull mirroring in a project. |
 | `namespace_id`                                              | integer | **{dotted-circle}** No | Namespace for the new project (defaults to the current user's namespace). |
@@ -1406,8 +1408,10 @@ Supported attributes:
 | `merge_commit_template`                                     | string         | **{dotted-circle}** No | [Template](../user/project/merge_requests/commit_templates.md) used to create merge commit message in merge requests. _([Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/20263) in GitLab 14.5.)_ |
 | `squash_commit_template`                                    | string         | **{dotted-circle}** No | [Template](../user/project/merge_requests/commit_templates.md) used to create squash commit message in merge requests. _([Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/345275) in GitLab 14.6.)_ |
 | `merge_method`                                              | string         | **{dotted-circle}** No | Set the [merge method](#project-merge-method) used. |
+| `merge_pipelines_enabled`                                   | boolean        | **{dotted-circle}** No | Enable or disable merge pipelines. |
 | `merge_requests_access_level`                               | string         | **{dotted-circle}** No | One of `disabled`, `private`, or `enabled`. |
 | `merge_requests_enabled`                                    | boolean        | **{dotted-circle}** No | _(Deprecated)_ Enable merge requests for this project. Use `merge_requests_access_level` instead. |
+| `merge_trains_enabled`                                      | boolean        | **{dotted-circle}** No | Enable or disable merge trains. |
 | `mirror_overwrites_diverged_branches` **(PREMIUM)**         | boolean        | **{dotted-circle}** No | Pull mirror overwrites diverged branches. |
 | `mirror_trigger_builds` **(PREMIUM)**                       | boolean        | **{dotted-circle}** No | Pull mirroring triggers builds. |
 | `mirror_user_id` **(PREMIUM)**                              | integer        | **{dotted-circle}** No | User responsible for all the activity surrounding a pull mirror event. _(administrators only)_ |