Fixing a lint error

Adding a space before a closing brace in HAML.

ee/app/views/admin/application_settings/_required_instance_ci_setting.html.haml

 - return unless License.feature_available?(:required_ci_templates)
 
-%section.settings.as-required-pipeline.no-animate#js-required-pipeline-settings{ class: ('expanded' if expanded)}
+%section.settings.as-required-pipeline.no-animate#js-required-pipeline-settings{ class: ('expanded' if expanded) }
   .settings-header
     %h4
       = s_('AdminSettings|Required pipeline configuration')