Docs: Update the return type for `get_current_site()`

This is now a `WP_Network` object.

See #32246.

Built from https://develop.svn.wordpress.org/trunk@36893


git-svn-id: http://core.svn.wordpress.org/trunk@36860 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/ms-functions.php

@@ -1590,9 +1590,9 @@ function wpmu_welcome_user_notification( $user_id, $password, $meta = array() )
  *
  * @since MU
  *
- * @global object $current_site
+ * @global WP_Network $current_site
  *
- * @return object
+ * @return WP_Network
  */
 function get_current_site() {
 	global $current_site;

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta2-36892';
+$wp_version = '4.5-beta2-36893';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.