Foreach_map tutorial

[mlazos]

Tutorial for foreach_map feature

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/tutorials/3318

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 2 New Failures

As of commit 13bc5e3 with merge base 548ea1c ():

NEW FAILURES - The following jobs have failed:

• Build tutorials / pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu) (gh)
  ValueError: expected a tensor object
• Check spelling / pyspelling (gh)
  Process completed with exit code 1.

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[svekars]

@AlannaBurke can you please take a look?

[AlannaBurke]

Looks pretty good, still waiting for the preview to load but found a couple tiny things to update.