[webcomponents] change acc name advice (#31)

feedback from alex surkov - missed in big pull
You can merge this Pull Request by running:

  git pull https://github.com/stevefaulkner/webcomponents gh-pages

Or you can view, comment on it, or merge it online at:

  https://github.com/w3c/webcomponents/pull/31

-- Commit Summary --

  * change acc name advice

-- File Changes --

    M spec/custom/index.html (2)

-- Patch Links --

https://github.com/w3c/webcomponents/pull/31.patch
https://github.com/w3c/webcomponents/pull/31.diff

---
Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/pull/31