Adding some brackets (required by Scala 3)

Author: peterbanda

openai-client-stream/src/main/scala/io/cequence/openaiscala/service/OpenAIServiceStreamedImpl.scala

@@ -34,7 +34,7 @@ private trait OpenAIServiceStreamedExtraImpl extends OpenAIServiceStreamedExtra
       Command.completions,
       "POST",
       bodyParams = createBodyParamsForCompletion(prompt, settings, stream = true)
-    ).map { json: JsValue =>
+    ).map { (json: JsValue) =>
       (json \ "error").toOption.map { error =>
         throw new OpenAIScalaClientException(error.toString())
       }.getOrElse(

openai-client/src/main/scala/io/cequence/openaiscala/service/ws/MultipartWritable.scala

@@ -48,7 +48,7 @@ object MultipartWritable {
     }
 
     BodyWritable[MultipartFormData](
-      transform = { form: MultipartFormData =>
+      transform = { (form: MultipartFormData) =>
         // combined data source
         val dataSource: Source[ByteString, _] = Source.single(formatDataParts(form.dataParts))