Simplify the admin menu notification selector so color schemes don't get stomped. props celloexpressions. see #27920 for trunk.

git-svn-id: https://develop.svn.wordpress.org/trunk@28177 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/admin-menu.css

@@ -500,7 +500,7 @@ ul#adminmenu > li.current > a.current:after {
 }
 
 #adminmenu .awaiting-mod,
-#adminmenu span.update-plugins,
+#adminmenu .update-plugins,
 #sidemenu li a span.update-plugins {
 	display: inline-block;
 	background-color: #d54e21;