Apply TW docs tweaks

doc/user/group/iterations/index.md

@@ -142,7 +142,7 @@ To view an iteration report, go to the iterations list page and select an iterat
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/222750) in GitLab 13.6.
 > - [Feature flag removed](https://gitlab.com/gitlab-org/gitlab/-/issues/269972) in GitLab 13.7.
-> - [Updated](https://gitlab.com/gitlab-org/gitlab/-/issues/326029) to provide scoped burnup and burndown charts in GitLab 14.9.
+> - Scoped burnup and burndown charts in subgroups and projects [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/326029) in GitLab 14.9.
 
 The iteration report includes [burndown and burnup charts](../../project/milestones/burndown_and_burnup_charts.md),
 similar to how they appear when viewing a [milestone](../../project/milestones/index.md).
@@ -150,28 +150,32 @@ similar to how they appear when viewing a [milestone](../../project/milestones/i
 Burndown charts help track completion progress of total scope, and burnup charts track the daily
 total count and weight of issues added to and completed in a given timebox.
 
-An iteration created at a Group level may be viewed in any of the group's subgroups or projects.
-When viewing an iteration in a subgroup or project,
-the burndown and burnup charts only counts the issues belonging to the subgroup or project.
+#### Iteration charts scoped to subgroups or projects
 
-To illstrate with an example, suppose a group had two projects respectively named `Project 1` and `Project 2`.
-Each project had a single issue assigned to the same iteration from the group.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/326029) in GitLab 14.9.
 
-An iteration report generated for the group would show the following counts:
+You can view burndown and burnup charts for iterations created for a group in any of its
+subgroups or projects.
+When you do this, the charts only count the issues that belong to the subgroup or project.
 
-- Completed 0 of 2
-- Incomplete 0 of 2
-- Unstarted 2 of 2
-- Burndown chart total issues 2
-- Burnup chart total issues 2
+For example, suppose a group has two projects named `Project 1` and `Project 2`.
+Each project has a single issue assigned to the same iteration from the group.
 
-An iteration report generated for `Project 1` would show the following counts:
+An iteration report generated for the group shows issue counts for all the group's projects:
 
-- Completed 0 of 1
-- Incomplete 0 of 1
-- Unstarted 1 of 1
-- Burndown chart total issues 1
-- Burnup chart total issues 1
+- Completed: 0 of 2
+- Incomplete: 0 of 2
+- Unstarted: 2 of 2
+- Burndown chart total issues: 2
+- Burnup chart total issues: 2
+
+An iteration report generated for `Project 1` shows only issues that belong to this project:
+
+- Completed: 0 of 1
+- Incomplete: 0 of 1
+- Unstarted: 1 of 1
+- Burndown chart total issues: 1
+- Burnup chart total issues: 1
 
 ### Group issues by label