Docs: Document more parameters and properties using typed array notation.

See #41756

Built from https://develop.svn.wordpress.org/trunk@42875


git-svn-id: http://core.svn.wordpress.org/trunk@42705 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/plugins.php

@@ -567,7 +567,7 @@ if ( strlen( $s ) ) {
  *
  * @since 3.0.0
  *
- * @param array $plugins_all An array containing all installed plugins.
+ * @param array[] $plugins_all An array of arrays containing information on all installed plugins.
  */
 do_action( 'pre_current_active_plugins', $plugins['all'] );
 ?>