rename tutorial and add to index

Author: Ricardo Decal

…/simple_distributed_training_tutorial.py …istributed_training_with_ray_tutorial.pybeginner_source/simple_distributed_training_tutorial.py renamed to beginner_source/distributed_training_with_ray_tutorial.py beginner_source/simple_distributed_training_tutorial.py renamed to beginner_source/distributed_training_with_ray_tutorial.py

@@ -167,6 +167,13 @@ Welcome to PyTorch Tutorials
    :link: beginner/batch_inference_tutorial.html
    :tags: Image/Video,Model-Optimization,Best-Practice,Ray-Distributed,Parallel-and-Distributed-Training
 
+.. customcarditem::
+   :header: Distributed Training with Ray Train
+   :card_description: Pre-train a transformer language model across multiple GPUs using PyTorch and Ray Train.
+   :image: _static/img/ray-data.png
+   :link: beginner/distributed_training_with_ray_tutorial.html
+   :tags: Text,Best-Practice,Ray-Distributed,Parallel-and-Distributed-Training
+
 .. Audio
 
 .. customcarditem::