Fix the iids parameters in the API documentation

Since the parameter name is really `iids[]`, it should be used consistently
across the documentation.

doc/api/group_milestones.md

@@ -6,7 +6,7 @@ Returns a list of group milestones.
 
 ```
 GET /groups/:id/milestones
-GET /groups/:id/milestones?iids=42
+GET /groups/:id/milestones?iids[]=42
 GET /groups/:id/milestones?iids[]=42&iids[]=43
 GET /groups/:id/milestones?state=active
 GET /groups/:id/milestones?state=closed
@@ -18,7 +18,7 @@ Parameters:
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
 | `id` | integer/string | yes | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user |
-| `iids` | Array[integer] | optional | Return only the milestones having the given `iids` |
+| `iids[]` | Array[integer] | optional | Return only the milestones having the given `iid` |
 | `state` | string | optional | Return only `active` or `closed` milestones` |
 | `search` | string | optional | Return only milestones with a title or description matching the provided string |
 

doc/api/issues.md

@@ -40,7 +40,7 @@ GET /issues?assignee_id=5
 | `scope`     | string         | no       | Return issues for the given scope: `created-by-me`, `assigned-to-me` or `all`. Defaults to `created-by-me` _([Introduced][ce-13004] in GitLab 9.5)_ |
 | `author_id` | integer        | no       | Return issues created by the given user `id`. Combine with `scope=all` or `scope=assigned-to-me`. _([Introduced][ce-13004] in GitLab 9.5)_ |
 | `assignee_id` | integer      | no       | Return issues assigned to the given user `id` _([Introduced][ce-13004] in GitLab 9.5)_                                      |
-| `iids`      | Array[integer] | no       | Return only the issues having the given `iid`                                                                               |
+| `iids[]`    | Array[integer] | no       | Return only the issues having the given `iid`                                                                               |
 | `order_by`  | string         | no       | Return issues ordered by `created_at` or `updated_at` fields. Default is `created_at`                                       |
 | `sort`      | string         | no       | Return issues sorted in `asc` or `desc` order. Default is `desc`                                                            |
 | `search`    | string         | no       | Search issues against their `title` and `description`                                                                       |
@@ -132,7 +132,7 @@ GET /groups/:id/issues?assignee_id=5
 | `id`        | integer/string | yes      | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user  |
 | `state`     | string         | no       | Return all issues or just those that are `opened` or `closed`                                                               |
 | `labels`    | string         | no       | Comma-separated list of label names, issues must have all labels to be returned. `No+Label` lists all issues with no labels |
-| `iids`      | Array[integer] | no       | Return only the issues having the given `iid`                                                                               |
+| `iids[]`    | Array[integer] | no       | Return only the issues having the given `iid`                                                                               |
 | `milestone` | string         | no       | The milestone title                                                                                                         |
 | `scope`     | string         | no       | Return issues for the given scope: `created-by-me`, `assigned-to-me` or `all` _([Introduced][ce-13004] in GitLab 9.5)_      |
 | `author_id` | integer        | no       | Return issues created by the given user `id` _([Introduced][ce-13004] in GitLab 9.5)_                                       |
@@ -227,7 +227,7 @@ GET /projects/:id/issues?assignee_id=5
 | Attribute   | Type           | Required | Description                                                                                                                 |
 |-------------|----------------|----------|-----------------------------------------------------------------------------------------------------------------------------|
 | `id`        | integer/string        | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user      |
-| `iids`      | Array[integer] | no       | Return only the milestone having the given `iid`                                                                            |
+| `iids[]`    | Array[integer] | no       | Return only the milestone having the given `iid`                                                                            |
 | `state`     | string         | no       | Return all issues or just those that are `opened` or `closed`                                                               |
 | `labels`    | string         | no       | Comma-separated list of label names, issues must have all labels to be returned. `No+Label` lists all issues with no labels |
 | `milestone` | string         | no       | The milestone title                                                                                                         |

doc/api/merge_requests.md

@@ -117,7 +117,7 @@ Parameters:
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
 | `id` | integer | yes | The ID of a project |
-| `iids` | Array[integer] | no | Return the request having the given `iid` |
+| `iids[]` | Array[integer] | no | Return the request having the given `iid` |
 | `state`   | string  | no    | Return all merge requests or just those that are `opened`, `closed`, or `merged`|
 | `order_by`| string  | no    | Return requests ordered by `created_at` or `updated_at` fields. Default is `created_at` |
 | `sort`    | string  | no    | Return requests sorted in `asc` or `desc` order. Default is `desc`  |

doc/api/milestones.md

@@ -6,7 +6,7 @@ Returns a list of project milestones.
 
 ```
 GET /projects/:id/milestones
-GET /projects/:id/milestones?iids=42
+GET /projects/:id/milestones?iids[]=42
 GET /projects/:id/milestones?iids[]=42&iids[]=43
 GET /projects/:id/milestones?state=active
 GET /projects/:id/milestones?state=closed
@@ -18,7 +18,7 @@ Parameters:
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
 | `id` | integer/string | yes | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user |
-| `iids` | Array[integer] | optional | Return only the milestones having the given `iids` |
+| `iids[]` | Array[integer] | optional | Return only the milestones having the given `iid` |
 | `state` | string | optional | Return only `active` or `closed` milestones` |
 | `search` | string | optional | Return only milestones with a title or description matching the provided string |