[dom] fix minor typo (#135)

You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/dom/pull/135

-- Commit Summary --

  * fix minor typo

-- File Changes --

    M dom.bs (6)

-- Patch Links --

https://github.com/whatwg/dom/pull/135.patch
https://github.com/whatwg/dom/pull/135.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/dom/pull/135