Fix godoc link in README

Author: nhooyr

README.md

@@ -110,7 +110,7 @@ https://github.com/gorilla/websocket
 This package is the community standard but it is 6 years old and over time
 has accumulated cruft. There are too many ways to do the same thing.
 Just compare the godoc of
-[nhooyr/websocket](https://godoc.org/github.com/nhooyr/websocket) side by side with
+[nhooyr/websocket](https://godoc.org/nhooyr.io/websocket) side by side with
 [gorilla/websocket](https://godoc.org/github.com/gorilla/websocket).
 
 The API for nhooyr/websocket has been designed such that there is only one way to do things