更新连接地址

当前项目使用的 API 是：v1/chat/completions 而不是 v1/completions，故更新链接地址

app/api/chat-stream/route.ts

@@ -22,7 +22,7 @@ async function createStream(req: NextRequest) {
       function onParse(event: any) {
         if (event.type === "event") {
           const data = event.data;
-          // https://beta.openai.com/docs/api-reference/completions/create#completions/create-stream
+          // https://platform.openai.com/docs/api-reference/chat/create#chat/create-stream
           if (data === "[DONE]") {
             controller.close();
             return;