[ttml2] Fix <item-name> in XSD schema

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

== Fix <item-name> in XSD schema ==
`<item-name>` allows either one of two specific tokens or a QName as value. The XSD however does not reflect this at the moment.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/754 using your GitHub account

Received on Wednesday, 16 May 2018 09:32:04 UTC