📝 更新文档

Author: zhangyd-c

README.md

@@ -24,12 +24,11 @@
 - 默认会按照下面的优先级自行寻找底层实现，`java 11 HttpClient -> OkHttp3 -> apache HttpClient -> hutool-http`
 - 也可以自行实现 `com.xkcoding.http.support.Http` 接口，通过 `HttpUtil.setHttp(new MyHttpImpl())` 设置进来
 - 可以配置超时时间及代理
-
 ```java
-HttpConfig config = new HttpConfig();
-config.setProxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", 10080)));
-config.setTimeout(15000);
-HttpUtil.setConfig(config);
+HttpUtil.setConfig(HttpConfig.builder()
+			.timeout(Constants.DEFAULT_TIMEOUT)
+			.proxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", 10080)))
+			.build());
 String s = HttpUtil.get("https://www.google.com");
 System.out.println("s = " + s);
 ```