Use help_page_path helper to generate runner_help_url

app/views/projects/jobs/show.html.haml

@@ -111,4 +111,4 @@
 
 .js-build-options{ data: javascript_build_options }
 
-#js-job-details-vue{ data: { endpoint: project_job_path(@project, @build, format: :json), runner_help_url: '/help/ci/runners/README.html#setting-maximum-job-timeout-for-a-runner' } }
+#js-job-details-vue{ data: { endpoint: project_job_path(@project, @build, format: :json), runner_help_url: help_page_path('ci/runners/README.html', anchor: 'setting-maximum-job-timeout-for-a-runner') } }