[whatwg/streams] Demos: Add lang="en" to html files (#974)

The Nu Html Checker really wants <html lang="en"> to be included in all
HTML files, and will exit with an error if it is not present. The deploy
script will not proceed if the Html Checker exits with an error.

Add an <html lang="en"> tag to all the demo HTML files to keep the Html
Checker happy.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/streams/pull/974

-- Commit Summary --

  * Demos: Add lang="en" to html files

-- File Changes --

    M demos/append-child.html (1)
    M demos/index.html (1)
    M demos/streaming-element-backpressure.html (1)
    M demos/streaming-element.html (1)

-- Patch Links --

https://github.com/whatwg/streams/pull/974.patch
https://github.com/whatwg/streams/pull/974.diff

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Received on Friday, 7 December 2018 14:56:57 UTC