[release-branch.r60] doc: document release.r60.3

««« CL 5267049 / eeca0d4a91a3
doc: document release.r60.3

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5267049
»»»

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5296041
1 file changed