Merge branch 'winh-divider-margin' into 'master'

Adjust divider margin to comply with design specs

See merge request gitlab-org/gitlab-ce!23548

app/assets/stylesheets/framework/variables_overrides.scss

@@ -19,3 +19,4 @@ $info: $blue-500;
 $warning: $orange-500;
 $danger: $red-500;
 $zindex-modal-backdrop: 1040;
+$nav-divider-margin-y: ($grid-size / 2);

changelogs/unreleased/winh-divider-margin.yml

+---
+title: Adjust divider margin to comply with design specs
+merge_request: 23548
+author:
+type: changed