Tweak import recommendation phrasing (dart-lang/web_socket_channel#180)

pkgs/web_socket_channel/README.md

diff --git a/pkgs/web_socket_channel/README.md b/pkgs/web_socket_channel/README.md
index 6ede03e..5aeecf9 100644
--- a/pkgs/web_socket_channel/README.md
+++ b/pkgs/web_socket_channel/README.md
@@ -15,7 +15,7 @@
 
 It also provides constants for the WebSocket protocol's pre-defined status codes
 in the [`status.dart` library][status]. It's strongly recommended that users
-import this library should be imported with the prefix `status`.
+import this library with the prefix `status`.
 
 [status]: https://pub.dev/documentation/web_socket_channel/latest/status/status-library.html