updated TOC for image registry doc (#270)

Signed-off-by: Jacob Berger <jacob.berger@ibm.com>

Author: j-c-berger

docs/_data/docstoc.yml

@@ -66,6 +66,11 @@
         - title: 'Installing Kibana and filtering logs in IBM Cloud Private'
           url: viewkibanalogs.html
 
+    - title: 'Specifying image registries for Codewind'
+      children: 
+        - title: 'Specifying image registries for Codewind'
+        - url: image-registry-credentials.html
+
 - title: 'Deploying Codewind remotely'
   children:
     - title: 'Overview'