Updating table of contents for Che content

PR is part of eclipse-archived/codewind#1758

Author: sishida

docs/_data/docstoc.yml

@@ -24,8 +24,14 @@
       children:
       - title: 'Installing Codewind for Eclipse Che'
         url: mdt-che-installinfo.html
-      - title: 'Adding registries in Che'
-        url: mdt-che-setupregistries.html
+      - title: 'Configuring Codewind for Eclipse Che'
+        children:
+        - title: 'Adding registries in Che'
+          url: mdt-che-setupregistries.md
+        - title: 'Creating a Codewind workspace in Che'
+          url: mdt-che-createcodewindworkspace.md
+      - title: 'Creating your first project with Codewind for Eclipse Che'
+        url: mdt-che-createfirstproject.md 
       - title: 'Creating the Codewind workspace'
         url: mdt-che-createcodewindworkspace.html
       - title: 'Setup to use Tekton Pipelines'
@@ -92,4 +98,4 @@
 
 - title: 'Troubleshooting'
   url: troubleshooting.html
-  
+