Fix and clarify tasks doc

doc/user/tasks.md

@@ -15,15 +15,18 @@ For the latest updates, check the [Tasks Roadmap](https://gitlab.com/groups/gitl
 FLAG:
 On self-managed GitLab, by default this feature is not available. To make it available,
 ask an administrator to [enable the feature flag](../administration/feature_flags.md) named `work_items`.
+On GitLab.com, this feature is not available.
 The feature is not ready for production use.
 
 Use tasks to track steps needed for the [issue](project/issues/index.md) to be closed.
 
 When planning an issue, you need a way to capture and break down technical
-requirements or steps necessary to complete it. An issue with tasks is better defined,
+requirements or steps necessary to complete it. An issue with related tasks is better defined,
 and so you can provide a more accurate issue weight and completion criteria.
 
-To see the roadmap for migrating issues and [epics](group/epics/index.md)
+Tasks are a type of work item, a step towards [default issue types](https://gitlab.com/gitlab-org/gitlab/-/issues/323404)
+in GitLab.
+For the roadmap of migrating issues and [epics](group/epics/index.md)
 to work items and adding custom work item types, visit
 [epic 6033](https://gitlab.com/groups/gitlab-org/-/epics/6033) or
 [Plan direction page](https://about.gitlab.com/direction/plan/).
@@ -31,4 +34,4 @@ to work items and adding custom work item types, visit
 ## View a task
 
 The only way to view a task is to open it with a deep link,
-for example: `/<group_name>/<project_name>/-/work_item/1`
+for example: `/<group_name>/<project_name>/-/work_item/1`.