doc: add DialOpt and friends to go1.1.html
doc: add DialOpt and friends to go1.1.html

R=golang-dev, r
CC=golang-dev
https://codereview.appspot.com/7725048
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go