Border and padding fixes for milestone description

app/assets/stylesheets/pages/milestone.scss

@@ -178,9 +178,15 @@ $status-box-line-height: 26px;
 
 .milestone-detail {
   border-bottom: 1px solid $border-color;
+  
   > h2 {
     margin: 0;
   }
+
+  .description {
+    border-top: 1px solid $border-color;
+    padding: $gl-padding 0 0;
+  }
 }
 
 @include media-breakpoint-down(xs) {

changelogs/unreleased/jl-milestone-title-spacing.yml

+---
+title: Fix spacing and borders in milestone title and description
+merge_request: 40649
+author:
+type: fixed