Update Train-CNN-with-FashionMNIST.ipynb

[pragyandas]

num_procs_per_worker is no more supported

What this PR does / why we need it:
Fix training example code in documentation

Checklist:

• Docs included if any changes are user facing

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[andreyvelich]

@pragyandas Actually, this is supported as you can see here: https://github.com/kubeflow/training-operator/blob/master/sdk/python/kubeflow/training/api/training_client.py#L348
We just need to release the latest version of SDK to PyPI

[coveralls]

Pull Request Test Coverage Report for Build 12749103242

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 12718184264:	0.0%
Covered Lines:	85
Relevant Lines:	85

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💛 - Coveralls

[pragyandas]

Thanks @andreyvelich! Closing PR