Update CONTRIBUTING.md (#1648)
Update CONTRIBUTING.md (#1648)

* Update CONTRIBUTING.md

add func instructions to contrib file

iu-uits-es/kc,ColostateResearchServices/kc,kuali/kc,ColostateResearchServices/kc,UniversityOfHawaiiORS/kc,iu-uits-es/kc,ColostateResearchServices/kc,UniversityOfHawaiiORS/kc,kuali/kc,UniversityOfHawaiiORS/kc,iu-uits-es/kc,kuali/kc