adding pointer to repo; adding navigation link

docs/_data/navigation.yml

@@ -52,6 +52,8 @@ lnav:
         url: /tutorials/azure/
       - title: "CIFAR-10"
         url: /tutorials/cifar-10/
+      - title: "GAN"
+        url: /tutorials/gan/
       - title: "BERT Pre-training"
         url: /tutorials/bert-pretraining/
       - title: "BingBertSQuAD Fine-tuning"

docs/_tutorials/gan.md

@@ -15,6 +15,7 @@ Please go through the [original tutorial](https://pytorch.org/tutorials/beginner
 
 ## Enabling DeepSpeed
 
+The codes may be obtained [here](https://github.com/microsoft/DeepSpeedExamples/tree/master/gan).
 
 ### Argument Parsing