Add a link to PyTorch Tutorials user survey (#2136)

Author: carljparker

index.rst

@@ -3,6 +3,7 @@ Welcome to PyTorch Tutorials
 
 What's new in PyTorch tutorials?
 
+* `Survey: Let us know how the PyTorch Tutorials are working for you! <https://docs.google.com/forms/d/e/1FAIpQLSfM-n7fF-K8AqkOcdSlzS_0g-xd6ith7U_W36xG-C_6Q2B6Mg/viewform>`__
 * `PyTorch Distributed Series <https://pytorch.org/tutorials/beginner/ddp_series_intro.html?utm_source=whats_new_tutorials&utm_medium=ddp_series_intro>`__
 * `Fast Transformer Inference with Better Transformer <https://pytorch.org/tutorials/beginner/bettertransformer_tutorial.html?utm_source=whats_new_tutorials&utm_medium=bettertransformer>`__
 * `Advanced model training with Fully Sharded Data Parallel (FSDP) <https://pytorch.org/tutorials/intermediate/FSDP_adavnced_tutorial.html?utm_source=whats_new_tutorials&utm_medium=FSDP_advanced>`__