Link to docs for storage transfer sample.

Not actually using the autodocs tool. I need to talk to the Python team
about getting this set up for the Java repos.

Author: tswast

storage/storage-transfer/README.md

@@ -2,6 +2,15 @@
 
 This app creates two types of transfers using the Transfer Service tool.
 
+<!-- auto-doc-link -->
+These samples are used on the following documentation pages:
+
+>
+* https://cloud.google.com/storage/transfer/create-client
+* https://cloud.google.com/storage/transfer/create-manage-transfer-program
+
+<!-- end-auto-doc-link -->
+
 ## Prerequisites
 
 1. Set up a project on Google Developers Console.