add colors

docs/crud/configuration.md

@@ -223,7 +223,7 @@ Compatible with [https://github.com/KnpLabs/DoctrineBehaviors/blob/master/docs/t
 
 Set the default sort applied in the repository query.
 
-```
+```php-inline
 $configuration
     ->setDefaultSort('index', 'title', 'asc')
     ->setField('index', 'Title', Field\TextField::class, [
@@ -238,7 +238,7 @@ $configuration
 
 It enables the drag & drop to sort entities.
 
-```
+```php-inline
 class MyEntity implements EntityInterface
 {
     // ...