docs: Use correct profile for intent

The ACTION_AUDIO_STATE_CHANGED intent action uses the HDP profile,
not the A2DP profile.

Bug: 158742305
Test: m ds-docs-java
Exempt-From-Owner-Approval: Docs-only change
Change-Id: I4358aac8c8aa9fc8b36e517e568e5a9db538555e
diff --git a/core/java/android/bluetooth/BluetoothHeadset.java b/core/java/android/bluetooth/BluetoothHeadset.java
index 6ce05f9..e6d6e7a 100644
--- a/core/java/android/bluetooth/BluetoothHeadset.java
+++ b/core/java/android/bluetooth/BluetoothHeadset.java
@@ -79,7 +79,7 @@
 
     /**
      * Intent used to broadcast the change in the Audio Connection state of the
-     * A2DP profile.
+     * HDP profile.
      *
      * <p>This intent will have 3 extras:
      * <ul>