Merge branch 'jira-transition-id-field' into 'master'

Jira Services Doc update to String

See merge request gitlab-org/gitlab-ce!26683

doc/api/services.md

@@ -522,7 +522,7 @@ Parameters:
 | `username`      | string | yes  | The username of the user created to be used with GitLab/JIRA. |
 | `password`      | string | yes  | The password of the user created to be used with GitLab/JIRA. |
 | `active`        | boolean | no  | Activates or deactivates the service. Defaults to false (deactivated). |
-| `jira_issue_transition_id` | integer | no | The ID of a transition that moves issues to a closed state. You can find this number under the JIRA workflow administration (**Administration > Issues > Workflows**) by selecting **View** under **Operations** of the desired workflow of your project. The ID of each state can be found inside the parenthesis of each transition name under the **Transitions (id)** column ([see screenshot][trans]). By default, this ID is set to `2`. |
+| `jira_issue_transition_id` | string | no | The ID of a transition that moves issues to a closed state. You can find this number under the JIRA workflow administration (**Administration > Issues > Workflows**) by selecting **View** under **Operations** of the desired workflow of your project. The ID of each state can be found inside the parenthesis of each transition name under the **Transitions (id)** column ([see screenshot][trans]). By default, this ID is set to `2`. |
 
 ### Delete JIRA service