[COOK-1087] Update the CONTRIBUTING file to fix a minor typo
[COOK-1087] Update the CONTRIBUTING file to fix a minor typo

dagolden/runit,wk8/runit,cookbooks/oc-runit,Altiscale/runit,hw-cookbooks/runit,ai-traders/runit,cwjohnston/runit,zendesk/runit,Demandbase/db-runit,hw-cookbooks/runit,Demandbase/db-runit,7bfa689ac3c4be50f8ba6c1ea8c5f316/runit,jkeiser/runit,NickLaMuro/runit,ai-traders/runit,wk8/runit,boldfield/runit,zuazo-forks/hw-cookbooks-runit,wk8/runit,Altiscale/runit,boldfield/runit,NickLaMuro/runit,Demandbase/db-runit,jkeiser/runit,shopping-adventure/chef_runit,ai-traders/runit,Altiscale/runit,NickLaMuro/runit,cwjohnston/runit,7bfa689ac3c4be50f8ba6c1ea8c5f316/runit,hw-cookbooks/runit,jkeiser/runit,cookbooks/hw-runit,boldfield/runit,cwjohnston/runit,7bfa689ac3c4be50f8ba6c1ea8c5f316/runit,dialoghq/runit