Update FSDP advanced training (pytorch#1969)

* Update FSDP advanced training

- Include in index.rst
- Include in what's new
- Limit width to 80 chars

Author: Svetlana Karslioglu

index.rst

@@ -5,6 +5,7 @@ What's new in PyTorch tutorials?
 
 * `Introduction to TorchRec <https://pytorch.org/tutorials/intermediate/torchrec_tutorial.html?utm_source=whats_new_tutorials&utm_medium=torchrec>`__
 * `Getting Started with Fully Sharded Data Parallel (FSDP) <https://pytorch.org/tutorials/intermediate/FSDP_tutorial.html?utm_source=whats_new_tutorials&utm_medium=FSDP>`__
+* `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>`__
 * `Grokking PyTorch Intel CPU Performance from First Principles <https://pytorch.org/tutorials/intermediate/torchserve_with_ipex?utm_source=whats_new_tutorials&utm_medium=torchserve_ipex>`__
 * `Customize Process Group Backends Using Cpp Extensions <https://pytorch.org/tutorials/intermediate/process_group_cpp_extension_tutorial.html?utm_source=whats_new_tutorials&utm_medium=cpp_ext>`__
 * `Forward-mode Automatic Differentiation <https://pytorch.org/tutorials/intermediate/forward_ad_usage.html?utm_source=whats_new_tutorials&utm_medium=forward_ad>`__ (added functorch API capabilities)
@@ -579,10 +580,17 @@ What's new in PyTorch tutorials?
 .. customcarditem::
    :header: Getting Started with Fully Sharded Data Parallel(FSDP)
    :card_description: Learn how to train models with Fully Sharded Data Parallel package.
-   :image: _static/img/thumbnails/cropped/Getting Started with FSDP.png
+   :image: _static/img/thumbnails/cropped/Getting-Started-with-FSDP.png
    :link: intermediate/FSDP_tutorial.html
    :tags: Parallel-and-Distributed-Training
 
+.. customcarditem::
+   :header: Advanced Model Training with Fully Sharded Data Parallel (FSDP)
+   :card_description: Explore advanced model training with Fully Sharded Data Parallel package.
+   :image: _static/img/thumbnails/cropped/Getting-Started-with-FSDP.png
+   :link: intermediate/FSDP_adavnced_tutorial.html
+   :tags: Parallel-and-Distributed-Training
+
 .. Mobile
 
 .. customcarditem::
@@ -857,6 +865,7 @@ Additional Resources
    intermediate/ddp_tutorial
    intermediate/dist_tuto
    intermediate/FSDP_tutorial
+   intermediate/FSDP_adavnced_tutorial
    intermediate/process_group_cpp_extension_tutorial
    intermediate/rpc_tutorial
    intermediate/rpc_param_server_tutorial