[ttml2] Fix <pitch> syntax.

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

== Fix <pitch> syntax. ==
The definition of `<pitch>` syntax should not specify an optional sign, since the definition of `<percentage>` and `<number>` already include an optional sign.

I am marking this as editorial since it is obvious that the current definition does not intend there to be two sets of signs and therefore, this is an editorial fix and not a change in the intended value syntax.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/939 using your GitHub account

Received on Sunday, 29 July 2018 23:35:42 UTC