emr-notebooks-magics example install command includes very dubious pip options

[sirosen]

I spotted this while doing some work with EMR and looking at the example notebooks:

emr-studio-notebook-examples/examples/jupyter-magic-commands.ipynb

Line 125 in bb73023

"%pip install -i https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple emr-notebooks-magics\n",

Using Test PyPI is extremely questionable, and using real PyPI behind it as an extra index is even more so. I recommend removing both of those options, sticking with a normal pip install emr-notebooks-magics.

Note

emr-notebooks-magics also appears to no longer be maintained.

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I'm not sure if this repo is being maintained either -- 3 years since last commit -- but it is being presented as part of a user's first interaction with EMR Serverless, so I recommend at least taking this opportunity to avoid misleading users about proper pip usage.