Linguistic fixes for broadcastradio 1.1 HAL.

Bug: b/64113304
Test: it builds
Change-Id: I5d5d090a44146e327d7b0f69cc2ba97060f3b515
diff --git a/broadcastradio/1.1/IBroadcastRadioFactory.hal b/broadcastradio/1.1/IBroadcastRadioFactory.hal
index fce1cc0..edf78ff 100644
--- a/broadcastradio/1.1/IBroadcastRadioFactory.hal
+++ b/broadcastradio/1.1/IBroadcastRadioFactory.hal
@@ -19,8 +19,10 @@
 import @1.0::IBroadcastRadioFactory;
 
 /**
- * To use 1.1 features you must cast specific interfaces after being returned from 1.0 HAL,
- * for example V1_1::ITuner::castFrom() after retrieving it from IBroadcastRadio::openTuner().
+ * To use 1.1 features you must cast specific interfaces returned from the
+ * 1.0 HAL. For example V1_0::IBroadcastRadio::openTuner() returns V1_0::ITuner,
+ * which can be cast with V1_1::ITuner::castFrom() call.
+ *
  * The 1.1 server must always return the 1.1 version of specific interface.
  */
 interface IBroadcastRadioFactory extends @1.0::IBroadcastRadioFactory {