Update _footer.scss

Author: vanruesc

manual/assets/css/src/screen/default/layout/_footer.scss

@@ -49,7 +49,7 @@ footer {
 		a, div {
 			display: inline-block;
 			height: 24px;
-			margin-right: 4px;
+			margin-right: 8px;
 			width: 24px;
 		}
 		div {