Various improvements in std::collections docs#41286

Merged

bors merged 4 commits intorust-lang:masterfrom

chordowl:std-collections-docs

Apr 15, 2017

Commits on Apr 13, 2017

Update std::collections' docs to use iterator (etc.) boilerplate
lukaramu
committed
Various fixes throughout std::collections' docs
lukaramu
committed
Various consistency and phrasing fixes in std::collections' docs
lukaramu
committed

Commits on Apr 14, 2017

std::collections docs: Address issues that came up in PR #41286
lukaramu
committed