Fix markup in activesupport/CHANGELOG.md
Fix markup in activesupport/CHANGELOG.md

[ci-skip]

Erol/rails,kmcphillips/rails,yahonda/rails,Vasfed/rails,kddeisz/rails,MSP-Greg/rails,yawboakye/rails,Vasfed/rails,yahonda/rails,BlakeWilliams/rails,esparta/rails,kddeisz/rails,kddeisz/rails,Edouard-chin/rails,MSP-Greg/rails,lcreid/rails,kmcphillips/rails,rails/rails,MSP-Greg/rails,esparta/rails,MSP-Greg/rails,esparta/rails,yawboakye/rails,esparta/rails,BlakeWilliams/rails,yawboakye/rails,georgeclaghorn/rails,Edouard-chin/rails,BlakeWilliams/rails,yawboakye/rails,kddeisz/rails,Vasfed/rails,georgeclaghorn/rails,georgeclaghorn/rails,rails/rails,kmcphillips/rails,Edouard-chin/rails,lcreid/rails,rails/rails,rails/rails,georgeclaghorn/rails,Erol/rails,yahonda/rails,BlakeWilliams/rails,lcreid/rails,Erol/rails,yahonda/rails,Erol/rails,kmcphillips/rails,Edouard-chin/rails,lcreid/rails,Vasfed/rails