websocket: re-recommend gorilla/websocket

Undoes CL 457356 now that it has new maintainers.

Change-Id: I4e05c72d5dec98f7893e6bea38db19916fc03bbb
Reviewed-on: https://go-review.googlesource.com/c/net/+/655195
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Reviewed-by: Damien Neil <[email protected]>
Auto-Submit: Damien Neil <[email protected]>

Author: seankhliao

websocket/websocket.go

@@ -6,9 +6,10 @@
 // as specified in RFC 6455.
 //
 // This package currently lacks some features found in an alternative
-// and more actively maintained WebSocket package:
+// and more actively maintained WebSocket packages:
 //
-//	https://pkg.go.dev/github.com/coder/websocket
+//   - [github.com/gorilla/websocket]
+//   - [github.com/coder/websocket]
 package websocket // import "golang.org/x/net/websocket"
 
 import (