fix error url

Change-Id: I989cb37935f4483651c8d02e25cf328bb252424e
diff --git a/HACKING.rst b/HACKING.rst
index 8c6d928..cd3c49c 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -1,4 +1,4 @@
 openstack Style Commandments
 ===============================================
 
-Read the OpenStack Style Commandments http://docs.openstack.org/developer/hacking/
+Read the OpenStack Style Commandments https://docs.openstack.org/hacking/latest/