Please take another look.
doc: Change id of footer
The heading "Copyright" uses id="copyright" as the anchor name.
However, there is also a <div id="copyright"> at the bottom.
Using the same ID value twice in the same file is illegal
(http://www.w3.org/TR/html401/struct/links.html#h-12.2.3).
R=golang-dev, bradfitz, rsc
CC=golang-dev
http://codereview.appspot.com/5909045
Committer: Brad Fitzpatrick <brad...@golang.org>