make "Go for it" link to install.html. delete the unnecessary "Programming in Go. Watch Now" from the right box. center the video picture in the right box.
make "Go for it" link to install.html.
delete the unnecessary "Programming in Go. Watch Now" from the right box.
center the video picture in the right box.

R=rsc
CC=go-dev
http://go/go-review/1025027
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go