Fix a link to goakit
@@ -17,7 +17,7 @@ Goa takes a different approach to building services by making it possible to
describe the *design* of the service API using a simple Go DSL. Goa uses the
description to generate specialized service helper code, client code and
documentation. Goa is extensible via plugins, for example the
-[goakit](https://github.com/goadesign/plugins/tree/master/goakit) plugin
+[goakit](https://github.com/goadesign/plugins/tree/v3/goakit) plugin
generates code that leverage the Go kit library.
The service design describes the transport independent layer of the services in
