[fetch] Clarify cache mode "default" (#215)

See https://github.com/whatwg/fetch/commit/a47e1e4fa9c6c1e96538e9cbbd93a3da56549b5e#commitcomment-16109934 for feedback from @mnot how we could further improve the wording of the note.

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fetch/issues/215

Received on Tuesday, 16 February 2016 06:57:15 UTC