CONTRIBUTING: fix up broken URI

Fix up URI pointing to design doc template.

Signed-off-by: Deepak Kodihalli <deepak.kodihalli.83@gmail.com>
Change-Id: I91e7db2a57b7091bfda4c37f68cb4654577264d1
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7fae17f..11d24d6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -148,7 +148,7 @@
 
 If the feedback seems favorable or requests more details, continue
 by submitting the design to gerrit starting with a copy of the
-[design_template](https://github.com/openbmc/docs/blob/master/design/design_template.md).
+[design_template](https://github.com/openbmc/docs/blob/master/designs/design-template.md).
 
 Submitting changes
 ------------------