Add CDS to developing guide

Change-Id: Ica8ea1a201a60b9d8259ff5e6c3218868fcdb7d0
Issue-ID: CCSDK-917
Signed-off-by: Ezhilarasi <ezhrajam@in.ibm.com>
diff --git a/docs/guides/onap-developer/developing/index.rst b/docs/guides/onap-developer/developing/index.rst
index ad7f732..d481933 100644
--- a/docs/guides/onap-developer/developing/index.rst
+++ b/docs/guides/onap-developer/developing/index.rst
@@ -75,6 +75,7 @@
    ../../../submodules/ccsdk/dashboard.git/docs/index
    ../../../submodules/ccsdk/platform/plugins.git/docs/index
    ../../../submodules/ccsdk/apps.git/docs/index
+   ../../../submodules/ccsdk/cds.git/docs/index
 
 .. Being consolidated in ccsdk distribution
    ../../../submodules/ccsdk/platform/blueprints.git/docs/index