[manifest] Small editorial fixes (#352)

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

  https://github.com/w3c/manifest/pull/352

-- Commit Summary --

  * Small editorial fixes

-- File Changes --

    M index.html (37)

-- Patch Links --

https://github.com/w3c/manifest/pull/352.patch
https://github.com/w3c/manifest/pull/352.diff

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/manifest/pull/352