Merge branch 'selhorn-use-gitlab-new-format' into 'master'

Updating to mimic homepage

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141713



Merged-by: Phillip Wells <pwells@gitlab.com>
Approved-by: Phillip Wells <pwells@gitlab.com>
Co-authored-by: Suzanne Selhorn <sselhorn@gitlab.com>

doc/user/index.md

@@ -9,15 +9,9 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 Get to know the GitLab end-to-end workflow. Configure permissions,
 organize your work, create and secure your application, and analyze its performance. Report on team productivity throughout the process.
 
-- [Learn Git](../topics/git/index.md)
-- [Set up your organization](../topics/set_up_organization.md)
-- [Organize work with projects](../user/project/organize_work_with_projects.md)
-- [Plan and track work](../topics/plan_and_track.md)
-- [Manage your code](../topics/manage_code.md)
-- [Use CI/CD to build your application](../topics/build_your_application.md)
-- [Secure your application](../user/application_security/secure_your_application.md)
-- [Deploy and release your application](../topics/release_your_application.md)
-- [Monitor application performance](../operations/index.md)
-- [Monitor runner performance](https://docs.gitlab.com/runner/monitoring/index.html)
-- [Manage your infrastructure](../user/infrastructure/index.md)
-- [Analyze GitLab usage](../user/analytics/index.md)
+| | | |
+|--|--|--|
+| [**Learn Git**](../topics/git/index.md) **{chevron-right}**<br><br>Common commands and workflows. | [**Set up your organization**](../topics/set_up_organization.md) **{chevron-right}**<br><br>Users, groups, namespaces, SSH keys.| [**Organize work with projects**](../user/project/organize_work_with_projects.md) **{chevron-right}**<br><br>Project visibility, search, badges, layout.|
+| [**Plan and track work**](../topics/plan_and_track.md) **{chevron-right}**<br><br>Epics, issues, milestones, labels.| [**Manage your code**](../topics/manage_code.md) **{chevron-right}**<br><br>Repositories, merge requests, remote development. | [**Use CI/CD to build your application**](../topics/build_your_application.md) **{chevron-right}**<br><br>Runners, jobs, pipelines, variables. |
+| [**Secure your application**](../user/application_security/secure_your_application.md) **{chevron-right}**<br><br>Container, dependency, and vulnerability scans. | [**Deploy and release your application**](../topics/release_your_application.md) **{chevron-right}**<br><br>Environments, packages, review apps, GitLab Pages. | [**Monitor application performance**](../operations/index.md) **{chevron-right}**<br><br>Error tracking, incident management. |
+| [**Monitor runner usage**](https://docs.gitlab.com/runner/monitoring/index.html) **{chevron-right}**<br><br>Prometheus metrics | [**Manage your infrastructure**](../user/infrastructure/index.md) **{chevron-right}**<br><br>Terraform and Kubernetes deployments.| [**Analyze GitLab usage**](../user/analytics/index.md) **{chevron-right}**<br><br>Instance, group, and project analytics. |