clean up dataset conversion readme (#168)
* clean up dataset conversion readme
* Update scripts/data_prep/README.md
Co-authored-by: Daniel King <43149077+dakinggg@users.noreply.github.com>
* Update scripts/data_prep/README.md
Co-authored-by: Daniel King <43149077+dakinggg@users.noreply.github.com>
* addresses feedback on PR
* add links to relevant proprocessing functions
* add link to streaming
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Co-authored-by: Daniel King <43149077+dakinggg@users.noreply.github.com>