Fix border spacing on multi-line comments

Changelog: fixed
EE: true

app/assets/javascripts/notes/components/noteable_note.vue

@@ -388,7 +388,7 @@ export default {
     <div
       v-if="showMultiLineComment"
       data-testid="multiline-comment"
-      class="gl-mb-3 gl-text-gray-500 gl-border-gray-200 gl-border-b-solid gl-border-b-1 gl-pb-3"
+      class="gl-mb-5 gl-text-gray-500 gl-border-gray-100 gl-border-b-solid gl-border-b-1 gl-pb-4"
     >
       <gl-sprintf :message="__('Comment on lines %{startLine} to %{endLine}')">
         <template #startLine>