doc: make it point to correct go1.3.1 change history

LGTM=minux, adg
R=golang-codereviews, minux, adg
CC=golang-codereviews
https://golang.org/cl/129180043

doc/devel/release.html

@@ -24,7 +24,7 @@ Read the <a href="/doc/go1.3">Go 1.3 Release Notes</a> for more information.
 
 <p>
 go1.3.1 (released 2014/08/13) includes bug fixes to the compiler and the <code>runtime</code>, <code>net</code>, and <code>crypto/rsa</code> packages.
-See the <a href="//code.google.com/p/go/source/list?name=release-branch.go1.3&r=40272ab1339ab2fb9e7160483e5e5d42d6b7e810">change history</a> for details.
+See the <a href="//code.google.com/p/go/source/list?name=release-branch.go1.3&r=073fc578434bf3e1e22749b559d273c8da728ebb">change history</a> for details.
 </p>
 
 <h2 id="go1.2">go1.2 (released 2013/12/01)</h2>