Docs: Adjust the `plugins_api()` DocBlock description to clarify the "second" available hook, `plugins_api`, and add new information for the "third" hook, `plugins_api_result`.

See #34035.

Built from https://develop.svn.wordpress.org/trunk@34645


git-svn-id: http://core.svn.wordpress.org/trunk@34609 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/plugin-install.php

@@ -18,7 +18,13 @@
  * as the second parameter. The hook for {@see 'plugins_api_args'} must ensure that
  * an object is returned.
  *
- * The second filter, {@see 'plugins_api'}, is the result that would be returned.
+ * The second filter, {@see 'plugins_api'}, allows a plugin to override the WordPress.org
+ * Plugin Install API entirely. If `$action` is 'query_plugins', 'plugin_information', or
+ * 'hot_categories', an object MUST be passed. If `$action` is 'hot_tags`, an array should
+ * be passed.
+ *
+ * Finally, the third filter, {@see 'plugins_api_result'}, makes it possible to filter the
+ * response object or array, depending on the `$action` type.
  *
  * Supported arguments per action:
  *

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34644';
+$wp_version = '4.4-alpha-34645';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.