Merge pull request #320 from andrii-pukhalevych/patch-1

Query::compileQuery docblock fix

src/Query.php

@@ -648,7 +648,7 @@ protected function _execute(): ResultSetInterface
     /**
      * Compile the Elasticsearch query.
      *
-     * @return string The Elasticsearch query.
+     * @return \Elastica\Query The Elasticsearch query.
      */
     public function compileQuery()
     {