added github flavoured markdown preview for issues and pull requests - #8731

added github flavoured markdown preview for issues and pull requests#8731

Boom (Nareshix) wants to merge 2 commits into

microsoft:mainmicrosoft/vscode-pull-request-github:mainfrom

Nareshix:markdown-previewNareshix/vscode-pull-request-github:markdown-previewCopy head branch name to clipboard