Fix syntax for single- and multi-line comments in wp-admin-directory files.

See #28931.

Built from https://develop.svn.wordpress.org/trunk@29206


git-svn-id: http://core.svn.wordpress.org/trunk@28990 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/media.php

@@ -40,7 +40,7 @@ case 'editattachment' :
 		exit;
 	}
 
-	// no break
+	// No break.
 case 'edit' :
 	$title = __('Edit Media');