Merge branch '270216-add-documentation-for-project-level-issue-analytics' into 'master'

Add doc page for project-level Issue Analytics

See merge request gitlab-org/gitlab!48193

doc/user/analytics/issue_analytics.md

+---
+type: reference
+stage: Manage
+group: Optimize
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
+# Issue Analytics **(PREMIUM)**
+
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/196561) in [GitLab Premium](https://about.gitlab.com/pricing/) 12.9.
+
+Issue Analytics is a bar graph which illustrates the number of issues created each month.
+The default timespan is 13 months, which includes the current month, and the 12 months
+prior.
+
+To access the chart, navigate to your project sidebar and select **{chart}** **Analytics > Issue Analytics**.
+
+Hover over each bar to see the total number of issues.
+
+To narrow the scope of issues included in the graph, enter your criteria in the
+**Search or filter results...** field. Criteria from the following list can be typed in or selected from a menu:
+
+- Author
+- Assignee
+- Milestone
+- Label
+- My reaction
+- Weight
+
+You can change the total number of months displayed by setting a URL parameter.
+For example, `https://gitlab.com/groups/gitlab-org/-/issues_analytics?months_back=15`
+shows a total of 15 months for the chart in the GitLab.org group.
+
+![Issues created per month](img/issues_created_per_month_v12_8.png)
+
+## Drill into the information
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/196547) in GitLab 13.1.
+
+You can examine details of individual issues by browsing the table
+located below the chart.
+
+The chart displays the top 100 issues based on the global page filters.
+
+![Issues table](img/issues_table_v13_1.png)

doc/user/group/issues_analytics/index.md

@@ -8,13 +8,12 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 # Issue Analytics **(PREMIUM)**
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/7478) in [GitLab Premium](https://about.gitlab.com/pricing/) 11.5.
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/196561) in [GitLab Premium](https://about.gitlab.com/pricing/) 12.9 at the project level.
 
 Issue Analytics is a bar graph which illustrates the number of issues created each month.
 The default timespan is 13 months, which includes the current month, and the 12 months
 prior.
 
-To access the chart, navigate to your group or project sidebar and select **{chart}** **Analytics > Issue Analytics**.
+To access the chart, navigate to your group sidebar and select **{chart}** **Analytics > Issue Analytics**.
 
 Hover over each bar to see the total number of issues.