[fetch] fixed an outdated url in HTTP fetch spec (#173)

I noticed, in substep 5 of step 3 in the HTTP Fetch specification, that the "set response's CSP list" link is outdated, so I've changed it to what seems like the correct url.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/fetch/pull/173

-- Commit Summary --

  * fixed an outdated url in HTTP fetch spec

-- File Changes --

    M Overview.src.html (3)

-- Patch Links --

https://github.com/whatwg/fetch/pull/173.patch
https://github.com/whatwg/fetch/pull/173.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fetch/pull/173