Update releases.json

correct preview.1 runtime version

Update releases.json

correct preview.1 runtime version

Update releases.json

correct preview.1 runtime version

Merge pull request dotnet#4682 from dotnet/rbhanda-patch-1

Update Release notes with Github Announcement for May release

Merge pull request dotnet#4606 from dotnet/netapril

Release artifacts for .NET 5 Preview 3

Merge pull request dotnet#4504 from dotnet/rbhanda-patch-1

Update 5.0.0-preview.2.md

Merge pull request dotnet#4454 from dotnet/marpatch

Updating 2.1.17 and 3.1.3 files with Git issue

Merge pull request dotnet#4454 from dotnet/marpatch

Updating 2.1.17 and 3.1.3 files with Git issue

Update release issue and changes link

Merge pull request dotnet#4365 from dotnet/mairaw-patch-2

Update link to go to the download page