Update gotutorial.md

Fixed broken link

go/gotutorial.md

@@ -282,7 +282,7 @@ To build and start a server, we:
 <a name="client"></a>
 ## Creating the client
 
-In this section, we'll look at creating a Go client for our `RouteGuide` service. You can see our complete example client code in [grpc-go/examples/route_guide/client/client.go](https://github.com/grpc/grpc-go/tree/master/examples/route_guide/server/client.go).
+In this section, we'll look at creating a Go client for our `RouteGuide` service. You can see our complete example client code in [grpc-go/examples/route_guide/client/client.go](https://github.com/grpc/grpc-go/tree/master/examples/route_guide/client/client.go).
 
 ### Creating a stub