Help/About: Use consistent vertical whitespace between sections on Freedoms page.

Props chetan200891.
Fixes #49619.

git-svn-id: https://develop.svn.wordpress.org/trunk@47443 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/about.css

@@ -1089,10 +1089,6 @@
 	margin: 0.6em 0;
 }
 
-.freedoms-php .has-4-columns {
-	margin-bottom: 40px;
-}
-
 .freedoms-php .column .freedoms-image {
 	background-image: url('https://s.w.org/wp-content/themes/pub/wporg-main/images/freedoms-2x.png');
 	background-size: 100%;

src/wp-admin/freedoms.php

@@ -86,6 +86,8 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 		</div>
 	</div>
 
+	<hr />
+
 	<div class="about__section">
 		<div class="column">
 			<p>