Adding E-CORD developer guide - SUMMARY

Change-Id: I35fc404bec8362ab6c7d087de7ba269943b36c86
(cherry picked from commit 49ab0b3d18263c5d4bda967ea23c52e83003c93e)
diff --git a/docs/SUMMARY.md b/docs/SUMMARY.md
index 7056bd4..5d7ca56 100644
--- a/docs/SUMMARY.md
+++ b/docs/SUMMARY.md
@@ -50,6 +50,7 @@
     * [E-CORD](profiles/ecord/README.md)
         * [Overview](profiles/ecord/overview.md)
         * [Installation guide](profiles/ecord/installation_guide.md)
+        * [Developer guide](profiles/ecord/dev_guide.md)
         * [Troubleshooting](profiles/ecord/troubleshooting.md)
         * [CFM Configuration](profiles/ecord/cfm.md)
     * [M-CORD](profiles/mcord/README.md)