Add Product Principles to onboarding checklist
What problem does this MR solve?
The Product Principles page is a useful handbook reference for understanding how we should build GitLab, but it also provides a shared language with Product Management. Guiding new team members to familiarize themselves with this section of the handbook should aid future decision making, but it's otherwise easy to not know this page exists.
Solution
Add an additional checkbox with other useful references.
Checklist
-
Check by another UX'r
Edited by Austin Regnery