Customizable HTTP clients (Spring Boot) (#104)

## Issue
Closes langchain4j/langchain4j#1044

Author: dliubarskyi

langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/AutoConfig.java

@@ -173,7 +173,7 @@ OllamaLanguageModel ollamaLanguageModel(
     HttpClientBuilder ollamaLanguageModelHttpClientBuilder(ObjectProvider<RestClient.Builder> restClientBuilder) {
         return new SpringRestClientBuilder()
                 .restClientBuilder(restClientBuilder.getIfAvailable(RestClient::builder))
-                // executor is not needed for no-streaming OllamaChatModel
+                // executor is not needed for no-streaming OllamaLanguageModel
                 .createDefaultStreamingRequestExecutor(false);
     }
 
@@ -261,7 +261,7 @@ OllamaEmbeddingModel ollamaEmbeddingModel(
     HttpClientBuilder ollamaEmbeddingModelHttpClientBuilder(ObjectProvider<RestClient.Builder> restClientBuilder) {
         return new SpringRestClientBuilder()
                 .restClientBuilder(restClientBuilder.getIfAvailable(RestClient::builder))
-                // executor is not needed for no-streaming OllamaChatModel
+                // executor is not needed for no-streaming OllamaEmbeddingModel
                 .createDefaultStreamingRequestExecutor(false);
     }
 }