Fix: #3833 Feedback about Multi GPU training with DDP

[samithcsachi]

Fixes #3833 Feedback about Multi GPU training with DDP

Description

At the end of the page, it says "Here's what the code looks like: " but it does not actually show the full code. The code was not visible because there was no proper spacing. Have corrected the spacing.

Checklist

• [x ] The issue that is being fixed is referred in the description (see above "Fixes Feedback about Multi GPU training with DDP #3833")
• [x ] Only one issue is addressed in this pull request
• [x ] Labels from the issue that this PR is fixing are added to this pull request
• [x ] No unnecessary issues are included into this pull request.

cc @svekars @sekyondaMeta @AlannaBurke

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/tutorials/3838

• 📄 Preview Python docs built from this PR

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✅ No Failures

As of commit 8f5fdb4 with merge base 1655d0a ():
💚 Looks good so far! There are no failures yet. 💚

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[wconstab]

looks fixed to me:

@svekars can you approve the workflows so this can land? it doesn't let me.

[wconstab]

@samithcsachi can you fix the lint issues and resubmit?