doc/go1.3.html: fix spelling mistakes Keep those builders busy.
doc/go1.3.html: fix spelling mistakes
Keep those builders busy.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/85710046

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang