ITS: change config.yml file to only "arduino" for rotation rig

bug: 237619218
Change-Id: I571107a6396d0cc5dc1b356e0f4f824daa2d6d57
diff --git a/apps/CameraITS/config.yml b/apps/CameraITS/config.yml
index 7302e3c..0ae754e 100644
--- a/apps/CameraITS/config.yml
+++ b/apps/CameraITS/config.yml
@@ -45,7 +45,7 @@
       test_length: 7
       debug_mode: "False"  # quotes are needed here
       chart_distance: 25
-      rotator_cntl: <controller-type>  # arduino, canakit, or as-is for manual
+      rotator_cntl: "arduino"  # Note: only sensor fusion supports manual
       rotator_ch: <controller-channel>
       camera: <camera-id>