[ttml2] Pull Request: Fix name of tts:luminanceGain (#975).

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

== Fix name of tts:luminanceGain (#975). ==
Closes #975.

See https://github.com/w3c/ttml2/pull/993

Received on Monday, 10 September 2018 15:46:41 UTC