Update detectInteraction documentation am: 46816afaf6

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/14086243

Change-Id: Icba5756c0640d0271a2354d04560f249908d061a
diff --git a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
index f9c13e6..9734873 100644
--- a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
@@ -213,6 +213,7 @@
      * 1) Any face is detected and the framework is notified via
      *    ISessionCallback#onInteractiondetected
      * 2) The operation was cancelled by the framework (see ICancellationSignal)
+     * 3) An error occurred, for example ERROR::TIMEOUT
      *
      * Note that if the operation is canceled, the implementation must notify the framework via
      * ISessionCallback#onError with Error::CANCELED.