Add help uri for smart battery page

Bug: 77299457
Test: Build
Change-Id: I3d0ba355e0ded6f830eddd501f57af601c0b33c7

src/com/android/settings/fuelgauge/SmartBatterySettings.java

@@ -59,6 +59,11 @@ public class SmartBatterySettings extends DashboardFragment {
         return R.xml.smart_battery_detail;
     }
 
+    @Override
+    public int getHelpResource() {
+        return R.string.help_uri_smart_battery_settings;
+    }
+
     @Override
     protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
         return buildPreferenceControllers(context, (SettingsActivity) getActivity(), this);