[ttml2] Pull Request: use mono ruby in example of rubyPosition

cconcolato has just submitted a new pull request for https://github.com/w3c/ttml2:

== use mono ruby in example of rubyPosition ==
closes #275 

See https://github.com/w3c/ttml2/pull/618

Received on Wednesday, 31 January 2018 19:16:43 UTC