doc/go1: fix broken link
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5695072
diff --git a/doc/go1.html b/doc/go1.html
index 75a309f..88fec19 100644
--- a/doc/go1.html
+++ b/doc/go1.html
@@ -1786,7 +1786,7 @@
The <a href="/pkg/regexp/"><code>regexp</code></a> package has been rewritten.
It has the same interface but the specification of the regular expressions
it supports has changed from the old "egrep" form to that of
-<a href="code.google.com/p/re2">RE2</a>.
+<a href="http://code.google.com/p/re2/">RE2</a>.
</p>
<p>
