[mediacapture-fromelement] Address HTML validation errors

miguelao has just created a new issue for 
https://github.com/w3c/mediacapture-fromelement:

== Address HTML validation errors ==
https://validator.w3.org/nu/?doc=https%3A%2F%2Fw3c.github.io%2Fmediacapture-fromelement%2F

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

Received on Thursday, 3 November 2016 14:40:59 UTC