[ttml2] Remove references to XML1.1. (#1158)

skynavga has just created a new issue for https://github.com/w3c/ttml2:

== Remove references to XML1.1. ==
Remove references to XML1.1 Production 4a by replacing them with references to XML1.0 5e Production 4a.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/1158 using your GitHub account

Received on Monday, 9 September 2019 10:13:55 UTC