Fix default value for indexer on docs

Author: iget-master

README.md

@@ -77,7 +77,7 @@ Option | Description
 --- | ---
 client | A setting hash to build Elasticsearch client. More information you can find [here](https://www.elastic.co/guide/en/elasticsearch/client/php-api/current/_configuration.html#_building_the_client_from_a_configuration_hash). By default the host is set to `localhost:9200`.
 update_mapping | The option that specifies whether to update a mapping automatically or not. By default it is set to `true`.
-indexer | Set to `single` for the single document indexing and to `bulk` for the bulk document indexing. By default is set to `true`.
+indexer | Set to `single` for the single document indexing and to `bulk` for the bulk document indexing. By default is set to `single`.
 
 Note, that if you use the bulk document indexing you'll probably want to change the chunk size, you can do that in the `config/scout.php` file.
 
@@ -445,4 +445,4 @@ App\MyModel::search('Brazil')
     ->buildPayload();
 ```
 
-Note, that this method returns a collection of payloads, because of possibility of using multiple search rules in one query. 
+Note, that this method returns a collection of payloads, because of possibility of using multiple search rules in one query.