Update Sparse Attention Tutorial (#357)
* adding BingSqaud e2e test
* updating the draft test; bring final step under try section
* finalizinf test for base deepspeed and deepspeed with ZeRO
* applying the comment (thanks Jeff); fixed formatting
* update Sparse Attention Tutorial
* fixed few issues and applied comments for better organization and readability
* updated sparse attention tutorial with making how to use section incremental; applying more comments
Co-authored-by: arashashari <arashashari@ArashMSLaptop.redmond.corp.microsoft.com>
