Add documentation for new nccl-plugin shifter module.
This updates the Shifter, PyTorch, and TensorFlow docs pages with the new nccl-plugin
shifter module details.
I also updated some examples to use latest versions of NERSC-provided images.
As a bonus I also updated a couple of links to our SC tutorial.
Submitters and reviewers please make sure
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internal links are relative and to the .md file -
avoid links named "here" -
alt-text for images is descriptive -
doesn't duplicate existing content -
spell check -
renders correctly -
does not include any identifiable information (real usernames, project names, etc)
Edited by Steven Farrell