Fix typo in upgrading_ruby_on_rails.md [ci-skip]
Fix typo in upgrading_ruby_on_rails.md [ci-skip]
kmcphillips/rails,kddeisz/rails,kddeisz/rails,Edouard-chin/rails,yahonda/rails,Envek/rails,Vasfed/rails,yawboakye/rails,BlakeWilliams/rails,Vasfed/rails,Erol/rails,Edouard-chin/rails,kddeisz/rails,Vasfed/rails,yawboakye/rails,lcreid/rails,Edouard-chin/rails,Envek/rails,yawboakye/rails,Vasfed/rails,Erol/rails,Erol/rails,lcreid/rails,MSP-Greg/rails,kmcphillips/rails,esparta/rails,yawboakye/rails,yahonda/rails,BlakeWilliams/rails,Envek/rails,georgeclaghorn/rails,rails/rails,kmcphillips/rails,Edouard-chin/rails,rails/rails,Envek/rails,georgeclaghorn/rails,kddeisz/rails,lcreid/rails,MSP-Greg/rails,esparta/rails,georgeclaghorn/rails,BlakeWilliams/rails,yahonda/rails,BlakeWilliams/rails,MSP-Greg/rails,georgeclaghorn/rails,rails/rails,lcreid/rails,kmcphillips/rails,esparta/rails,Erol/rails,MSP-Greg/rails,yahonda/rails,rails/rails,esparta/rails