Index: src/wp-admin/includes/plugin-install.php
===================================================================
--- src/wp-admin/includes/plugin-install.php	(revision 34634)
+++ src/wp-admin/includes/plugin-install.php	(working copy)
@@ -20,6 +20,24 @@
  *
  * The second filter, {@see 'plugins_api'}, is the result that would be returned.
  *
+ * Supported arguments per action:
+ *
+ * |      Argument      | query_plugins | plugin_information | hot_tags | hot_categories |
+ * | -------------------| ------------- | ------------------ | -------- | -------------- |
+ * | $slug              | No            |  Yes               | No       | No             |
+ * | $per_page          | Yes           |  No                | No       | No             |
+ * | $page              | Yes           |  No                | No       | No             |
+ * | $number            | No            |  No                | Yes      | Yes            |
+ * | $search            | Yes           |  No                | No       | No             |
+ * | $tag               | Yes           |  No                | No       | No             |
+ * | $author            | Yes           |  No                | No       | No             |
+ * | $user              | Yes           |  No                | No       | No             |
+ * | $browse            | Yes           |  No                | No       | No             |
+ * | $locale            | Yes           |  Yes               | No       | No             |
+ * | $installed_plugins | Yes           |  No                | No       | No             |
+ * | $is_ssl            | Yes           |  Yes               | No       | No             |
+ * | $fields            | Yes           |  Yes               | No       | No             |
+ *
  * @since 2.7.0
  *
  * @param string       $action API action to perform: 'query_plugins', 'plugin_information',
@@ -70,9 +88,9 @@
  *         @type bool $contributors      Whether to return the list of contributors. Default false.
  *     }
  * }
- * @return object|WP_Error Response object on success, WP_Error on failure. See the
+ * @return object|array|WP_Error Response object or array on success, WP_Error on failure. See the
  *         {@link https://developer.wordpress.org/reference/functions/plugins_api/ function reference article}
- *         for more information on the make-up of possible return objects depending on the value of `$action`.
+ *         for more information on the make-up of possible return values depending on the value of `$action`.
  */
 function plugins_api( $action, $args = array() ) {