[release-branch.r60] doc: link to A Tour of Go

««« CL 5181045 / bc48691295c8
doc: link to A Tour of Go

R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/5181045
»»»

R=dsymonds
CC=golang-dev
https://golang.org/cl/5203041
3 files changed