[media-source] Use RFC 2119 words

ddorwin has just created a new issue for 
https://github.com/w3c/media-source:

== Use RFC 2119 words ==
ReSpec supports [RFC 2119](https://www.ietf.org/rfc/rfc2119.txt) words
 ("MUST", "MUST NOT", etc.). If such words are capitalized, ReSpec 
will format them in a way that indicates their importance. Neither MSE
 or the Byte Stream Format pages appear to use these.

Please view or discuss this issue at 
https://github.com/w3c/media-source/issues/52 using your GitHub 
account

Received on Thursday, 25 February 2016 21:51:45 UTC