TOC and Titling debugging updates.

docs/tutorials/index.md

@@ -29,6 +29,10 @@ each of which has a sequence of steps.
 
 * [Running ZooKeeper, A CP Distributed System](/docs/tutorials/stateful-application/zookeeper/)
 
+#### Services
+
+* [Using SourceIP](/docs/tutorials/services/source-ip/)
+
 ### What's next
 
 If you would like to write a tutorial, see

docs/tutorials/services/source-ip.md

@@ -1,4 +1,5 @@
 ---
+title: Using Source IP
 ---
 
 {% capture overview %}