ci(Releases): Use tag name with v prefix
ci(Releases): Use tag name with v prefix

See error without it: https://dev.azure.com/stencila/stencila/_build/results?buildId=8578&view=logs&j=8d802004-fbbb-5f17-b73e-f23de0c1dec8&t=7a29959a-6c04-5e83-f8f0-319180787bbf&l=1582

stencila/hub,stencila/hub,stencila/hub,stencila/hub,stencila/hub