fixed examples

Author: deep-learning-dynamo

README.md

@@ -53,7 +53,9 @@ Simple way:
 ```
 String apiKey = System.getenv("OPENAI_API_KEY");
 
-OpenAiClient client = new OpenAiClient(apiKey);
+OpenAiClient client = OpenAiClient.builder()
+ .openAiApiKey(apiKey)
+ .build();
 ```
 
 Customizable way:
@@ -62,7 +64,7 @@ Customizable way:
 String apiKey = System.getenv("OPENAI_API_KEY");
 
 OpenAiClient client = OpenAiClient.builder()
-.apiKey(apiKey)
+.openAiApiKey(apiKey)
 .callTimeout(ofSeconds(60))
 .connectTimeout(ofSeconds(60))
 .readTimeout(ofSeconds(60))