Penscratch 2: add style resets for social links (#5593)

Problem:
  Non text widgets are given padding-top and border-top in the penscratch-2 theme.
  These style are also effecting social links.

Change summary:
  * add style resets to override styles for social links

penscratch-2/style.css

@@ -1390,6 +1390,12 @@ object {
 	color: #666;
 }
 
+/* Social links */
+.wp-block-social-links li.wp-social-link {
+	padding-top: 0;
+	border-top: none;
+}
+
 /* Calendar widget */
 #wp-calendar td,
 #wp-calendar th,