Docs: Correct and expand the docs for the `$post_type` argument of `wp_nav_menu_item_post_type_meta_box()`.

Props mehulkaklotar for initial patch.
See #37211.
Built from https://develop.svn.wordpress.org/trunk@38127


git-svn-id: http://core.svn.wordpress.org/trunk@38068 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/nav-menu.php

@@ -297,7 +297,14 @@ function wp_nav_menu_item_link_meta_box() {
  * @global int|string $nav_menu_selected_id
  *
  * @param string $object Not used.
- * @param string $post_type The post type object.
+ * @param array $post_type {
+ *     Data that will be used as arguments of the post type meta box.
+ *
+ *     @type string       $id       Meta box ID (used in the 'id' attribute for the meta box).
+ *     @type string       $title    Title of the meta box.
+ *     @type string       $callback Function that fills the box with the desired content.
+ *     @type WP_Post_Type $args     The current post type object for this menu item meta box.
+ * }
  */
 function wp_nav_menu_item_post_type_meta_box( $object, $post_type ) {
 	global $_nav_menu_placeholder, $nav_menu_selected_id;

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.6-beta4-38126';
+$wp_version = '4.6-beta4-38127';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.