Docs: Document the `term_order` value for the `orderby` parameter of `WP_Term_Query::__construct()`.

Props pbiron.
See #49572.
Built from https://develop.svn.wordpress.org/trunk@47898


git-svn-id: http://core.svn.wordpress.org/trunk@47672 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-term-query.php

@@ -98,7 +98,8 @@ class WP_Term_Query {
 	 *                                                limited to terms associated with these objects.
 	 *     @type string       $orderby                Field(s) to order terms by. Accepts:
 	 *                                                - term fields ('name', 'slug', 'term_group', 'term_id', 'id',
-	 *                                                  'description', 'parent').
+	 *                                                  'description', 'parent', 'term_order'). Unless `$object_ids`
+	 *                                                  is not empty, 'term_order' is treated the same as 'term_id'.
 	 *                                                - 'count' for term taxonomy count.
 	 *                                                - 'include' to match the 'order' of the $include param.
 	 *                                                - 'slug__in' to match the 'order' of the $slug param.

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47897';
+$wp_version = '5.5-alpha-47898';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.