Merge branch 'docs-spacing-issue-fix-runbook' into 'master'

Spacing issue fix

See merge request gitlab-org/gitlab!31109

doc/user/project/clusters/runbooks/index.md

@@ -134,7 +134,7 @@ the components outlined above and the pre-loaded demo runbook.
    1. Navigate to **{settings}** **Settings >> CI/CD >> Variables** to create
       the variables in your project.
 
-     ![GitLab variables](img/gitlab-variables.png)
+      ![GitLab variables](img/gitlab-variables.png)
 
    1. Click **Save variables**.