Fix wrong TetherProvisioningActivity definition

Bug: 122108346
Bug: 120069528
Test: build, boot, manual on/off hotspot
Change-Id: Iaeb2d271d901fcbd9d27c9a9de369e2af68d3645
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index c9ff9cf..30fd403 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -436,7 +436,7 @@
             android:exported="true"
             android:permission="android.permission.TETHER_PRIVILEGED" />
 
-        <activity android:name="network.TetherProvisioningActivity"
+        <activity android:name=".network.TetherProvisioningActivity"
             android:exported="true"
             android:permission="android.permission.TETHER_PRIVILEGED"
             android:excludeFromRecents="true"