Try to add some more documentation to testables

Test: runtest --path frameworks/base/tests/testables/tests
Change-Id: I3dc39f05c3b91929a7d37b28879e31fb699f7334
diff --git a/tests/testables/src/android/testing/AndroidTestingRunner.java b/tests/testables/src/android/testing/AndroidTestingRunner.java
index a425f70..cf5d4cf 100644
--- a/tests/testables/src/android/testing/AndroidTestingRunner.java
+++ b/tests/testables/src/android/testing/AndroidTestingRunner.java
@@ -35,6 +35,8 @@
 
 /**
  * A runner with support for extra annotations provided by the Testables library.
+ * @see UiThreadTest
+ * @see TestableLooper.RunWithLooper
  */
 public class AndroidTestingRunner extends BlockJUnit4ClassRunner {