Updated out of date link in go.md (#2092)

Previous link for the Go wiki was no longer valid. Updated to the
current wiki site location.

Co-authored-by: Rico Sta. Cruz <rstacruz@users.noreply.github.com>

go.md

@@ -16,7 +16,7 @@ updated: 2020-06-21
 
 - [A tour of Go](https://tour.golang.org/welcome/1) _(tour.golang.org)_
 - [Go repl](https://repl.it/languages/go) _(repl.it)_
-- [Golang wiki](https://github.com/golang/go/wiki/) _(github.com)_
+- [Golang wiki](https://go.dev/wiki/) _(go.dev)_
 
 ### Hello world
 {: .-prime}