Update bug reporting instructions

Change-Id: I4a09e33cdde3e38f915d31dddbcc82d078bae8d9

README.md

@@ -29,7 +29,7 @@ This sample shows how to develop a Cast custom receiver for Smart Home Camera St
 
 ## How to report bugs
 * [Google Cast SDK Support](https://developers.google.com/cast/support)
-* For sample app issues, open an issue on this GitHub repo.
+* [Sample App Issues](https://issuetracker.google.com/issues/new?component=190205&template=1901999)
 
 ## Contributions
 Please read and follow the steps in the [CONTRIBUTING.md](CONTRIBUTING.md).