Fix CI link in readme (dart-lang/web_socket_channel#248)

pkgs/web_socket_channel/README.md

diff --git a/pkgs/web_socket_channel/README.md b/pkgs/web_socket_channel/README.md
index 5658ecc..19365df 100644
--- a/pkgs/web_socket_channel/README.md
+++ b/pkgs/web_socket_channel/README.md
@@ -1,4 +1,4 @@
-[![Build Status](https://github.com/dart-lang/web_socket_channel/workflows/Dart%20CI/badge.svg)](https://github.com/dart-lang/web_socket_channel/actions?query=workflow%3A"Dart+CI"+branch%3Amaster)
+[![CI](https://github.com/dart-lang/web_socket_channel/actions/workflows/test-package.yml/badge.svg?branch=master)](https://github.com/dart-lang/web_socket_channel/actions/workflows/test-package.yml)
 
 The `web_socket_channel` package provides [`StreamChannel`][stream_channel]
 wrappers for WebSocket connections. It provides a cross-platform