doc: fix old broken link
The Camlistore code tree rearranged after the go tool came
out. (I didn't know this link was here until I saw it in
some logs.)
R=adg
CC=golang-dev
https://golang.org/cl/7374043
diff --git a/doc/articles/error_handling.html b/doc/articles/error_handling.html
index 8f4fffb..6ba05ac 100644
--- a/doc/articles/error_handling.html
+++ b/doc/articles/error_handling.html
@@ -137,7 +137,7 @@
<p>
(This is a slightly simplified version of some
-<a href="http://camlistore.org/code/?p=camlistore.git;a=blob;f=lib/go/camli/jsonconfig/eval.go#l68">actual code</a>
+<a href="http://golang.org/s/camjsondecode">actual code</a>
from the <a href="http://camlistore.org">Camlistore</a> project.)
</p>
