Replace the stub article for v2 release notes (#8305)
Replace the stub article for v2 release notes (#8305)

* Replace the stub article for v2 release notes

* next.gatsbyjs.org is deprecated

* Update v2-release-notes.md

gatsbyjs/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,0x80/gatsby,gatsbyjs/gatsby,0x80/gatsby,gatsbyjs/gatsby,0x80/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby