Docs correction for "Customizing criteria" (#279)

I believe there is a mistake in the Customizing criteria [code example](https://omines.github.io/datatables-bundle/#customizing-criteria). The key should be `criteria` and not `query`.

Author: chvanam

docs/source/index.html.md

@@ -279,7 +279,7 @@ interaction based on internal changes in this bundle and/or Doctrine ORM.
 ```php?start_inline=1
 $table->createAdapter(ORMAdapter::class, [
     'entity' => Employee::class,
-    'query' => [
+    'criteria' => [
         function (QueryBuilder $builder) {
             $builder->andWhere($builder->expr()->like('c.name', ':test'))->setParameter('test', '%ny 2%');
         },