Update OpenBMC CLA github broken link in documentation

Change-Id: Ie71ff0c2f941f3ab1b14abf06bba51a2ce850d41
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 18b556d..851513d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -5,7 +5,7 @@
 
 Submitting changes via Gerrit server
 ------------------------------------
--   Reference [OpenBMC CLA signers](https://github.com/openbmc/openbmc-tools/blob/master/emilyshaffer/cla-signers/cla-signers)
+-   Reference [OpenBMC CLA](https://github.com/openbmc/docs/blob/master/CONTRIBUTING.md#submitting-changes-via-gerrit-server-to-openbmc)
 -   Reference [OpenBMC docs](https://github.com/openbmc/docs/blob/master/CONTRIBUTING.md#submitting-changes-via-gerrit-server)
 
 Links