[Platform] Fix import in test

Author: OskarStark

src/platform/tests/Bridge/OpenAi/Contract/DocumentNormalizerTest.php

@@ -15,10 +15,10 @@
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Medium;
 use PHPUnit\Framework\TestCase;
-use Symfony\AI\Platform\Bridge\Gemini\Contract\MessageBagNormalizer;
 use Symfony\AI\Platform\Bridge\OpenAi\Contract\FileNormalizer;
 use Symfony\AI\Platform\Bridge\OpenAi\Gpt;
 use Symfony\AI\Platform\Contract;
+use Symfony\AI\Platform\Contract\Normalizer\Message\MessageBagNormalizer;
 use Symfony\AI\Platform\Message\Content\Document;
 use Symfony\AI\Platform\Message\Content\File;