Fix build.gradle entry for BluetoothChat sample

Change-Id: I30eb45026b3c4ddff5aeadd4210f9f81feefa274
diff --git a/build.gradle b/build.gradle
index 37cbf22..97b3559 100644
--- a/build.gradle
+++ b/build.gradle
@@ -71,7 +71,7 @@
 "ui/activitytasks/DocumentCentricRelinquishIdentity",
 "admin/AppRestrictionEnforcer",
 "admin/AppRestrictionSchema",
-"bluetooth/BluetoothChat",
+"connectivity/bluetooth/BluetoothChat",
 "wearable/wear/AgendaData",
 "wearable/wear/DataLayer",
 "wearable/wear/DelayedConfirmation",