Update go protogen path

Author: corentinmusard

sdks/go/protobuf.mdx

@@ -105,8 +105,8 @@ They have a couple of useful methods to work with them.
 
 ```go Go
 import (
-  "github.com/paulmach/orb"
-	datasetsv1 "github.com/tilebox/tilebox-go/protogen/go/datasets/v1"
+	"github.com/paulmach/orb"
+	datasetsv1 "github.com/tilebox/tilebox-go/protogen/datasets/v1"
 	"google.golang.org/protobuf/types/known/durationpb"
 	"google.golang.org/protobuf/types/known/timestamppb"
 )