Bluetooth API spelling fixes ("wether" -> "whether")

Bug: 30622771
Test: manual
Change-Id: I01c8b18d0057f2fd6e477ce2ca0b779321b6c0e6
(cherry picked from commit 08ed924d8922eec0555f6a860d80e6e2770c8a2d)
diff --git a/core/java/android/bluetooth/BluetoothGatt.java b/core/java/android/bluetooth/BluetoothGatt.java
index aa61ce2..5d1e8ec 100644
--- a/core/java/android/bluetooth/BluetoothGatt.java
+++ b/core/java/android/bluetooth/BluetoothGatt.java
@@ -778,7 +778,7 @@
 
     /**
      * Set the preferred connection PHY for this app. Please note that this is just a
-     * recommendation, wether the PHY change will happen depends on other applications peferences,
+     * recommendation, whether the PHY change will happen depends on other applications peferences,
      * local and remote controller capabilities. Controller can override these settings.
      * <p>
      * {@link BluetoothGattCallback#onPhyUpdate} will be triggered as a result of this call, even