Improves variable name

app/views/shared/_auto_devops_callout.html.haml

@@ -10,6 +10,6 @@
       %p= s_('AutoDevOps|Auto DevOps can be activated for this project. It will automatically build, test, and deploy your application based on a predefined CI/CD configuration.')
       %p
         - link = link_to(s_('AutoDevOps|Auto DevOps documentation'), help_page_path('topics/autodevops/index.md'), target: '_blank', rel: 'noopener noreferrer')
-        = s_('AutoDevOps|Learn more in the %{link}').html_safe % { link: link }
+        = s_('AutoDevOps|Learn more in the %{link_to_documentation}').html_safe % { link_to_documentation: link }
 
       = link_to s_('AutoDevOps|Enable in settings'), project_settings_ci_cd_path(@project, anchor: 'js-general-pipeline-settings'), class: 'btn btn-primary js-close-callout'