P1BIGROCKS-1359 updating contributing file to link to external github contributions

General MR

Summary

updating contributing file to link to external github contributions

added kinddocs statusreview labels

requested review from @andrewshoell, @jamie.causey, @nicole.dupree, @mlunato47, @brettcharrier, @jaredmladner, and @ryan.j.garcia

assigned to @seanthomas007

requested review from @rgsjustins and @ryan.thompson.44

removed review request for @nicole.dupree

removed review request for @mlunato47

lgtm

approved this merge request

removed review request for @jaredmladner

approved this merge request

mentioned in commit 0b5eb5db

merged