Heroku: Heroku replaced 'Region support' with 'Fork support' in the Key-Value Store Private-5 feature list, which removed the l…

["Network isolation in Private Space","Region support","High availability","Private Space required"] → ["Network isolation in Private Space","Fork support","High availability","Private Space required"]

Heroku replaced 'Region support' with 'Fork support' in the Key-Value Store Private-5 feature list, which removed the listed Region support. High availability and network isolation in Private Space were unchanged.