fix densepose dataloader path
Summary: Pull Request resolved:
@@ -41,7 +41,7 @@ You can implement it using any tools you like.
If you use [DefaultTrainer](../modules/engine.html#detectron2.engine.defaults.DefaultTrainer),
you can overwrite its `build_{train,test}__loader` method to use your own dataloader.
-See the [densepose dataloader](/projects/DensePose/densepose/train_net.py)
+See the [densepose dataloader](/projects/DensePose/train_net.py)
for an example.
If you write your own training loop, you can plug in your data loader easily.
