Spring-ai Fix typo in model name, fixed #442

Fixed #442

var openAiApi = new OpenAiApi(System.getenv("OPENAI_API_KEY"));

var chatClient = new OpenAiChatClient(openAiApi)
    .withDefaultOptions(OpenAiChatOptions.builder()
            .withModel("gpt-3.5-turbo")            // gpt-35-turbo => gpt-3.5-turbo
            .withTemperature(0.4)
            .withMaxTokens(200)
        .build());

ChatResponse response = chatClient.call(
    new Prompt("Generate the names of 5 famous pirates."));

Comment From: abel533

I've noticed that many example codes are incorrect, which is caused by API changes. Is it necessary to fix these issues now?

Comment From: tzolov

Thanks for catching this @abel533