Fix OpenAI and GPT namespaces in Neo4j RAG example

Author: chr-hertel

examples/rag/neo4j.php

@@ -14,9 +14,9 @@
 use Symfony\AI\Agent\Toolbox\Tool\SimilaritySearch;
 use Symfony\AI\Agent\Toolbox\Toolbox;
 use Symfony\AI\Fixtures\Movies;
-use Symfony\AI\Platform\Bridge\OpenAI\Embeddings;
-use Symfony\AI\Platform\Bridge\OpenAI\GPT;
-use Symfony\AI\Platform\Bridge\OpenAI\PlatformFactory;
+use Symfony\AI\Platform\Bridge\OpenAi\Embeddings;
+use Symfony\AI\Platform\Bridge\OpenAi\Gpt;
+use Symfony\AI\Platform\Bridge\OpenAi\PlatformFactory;
 use Symfony\AI\Platform\Message\Message;
 use Symfony\AI\Platform\Message\MessageBag;
 use Symfony\AI\Store\Bridge\Neo4j\Store;
@@ -59,7 +59,7 @@
 $indexer = new Indexer($vectorizer, $store);
 $indexer->index($documents);
 
-$model = new GPT(GPT::GPT_4O_MINI);
+$model = new Gpt(Gpt::GPT_4O_MINI);
 
 $similaritySearch = new SimilaritySearch($platform, $embeddings, $store);
 $toolbox = new Toolbox([$similaritySearch], logger: logger());