Fixes#870 by updating outdated documentation URLs across Part 1, Part 2, and Part 14 in ONBOARDING.md to their correct paths.
Co-authored-by: richardkenneth <richard-kenneth@users.noreply.github.com>
* ONBOARDING.md notices
* updated ONBOARDING-README-NOTICES
* Updated steps to go through Parts of the ONBOARDING
* Update ONBOARDING.md
* update ONBOARDING.md
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Co-authored-by: Rotimi Best <best@classroomio.com>