Update README.md (dotnet#8911)

Update README.md (dotnet#8911)

Update README.md (dotnet#8911)

Update 7.0.13.md (dotnet#8857)

* Update 7.0.13.md

* Update 6.0.24.md

Update 7.0.13.md (dotnet#8857)

* Update 7.0.13.md

* Update 6.0.24.md

Remove extra RC1 SDK (dotnet#8822)

Remove extra RC1 SDK (dotnet#8822)

Remove extra RC1 SDK (dotnet#8822)

Update releases.json (dotnet#8764)

Update releases.json (dotnet#8764)