Update practice bot calibration based on manual adjustment.

Change-Id: Ifb28c5e6ef1753dc1014aa38592f920770a28b9d
diff --git a/y2019/vision/calibrate_9971.sh b/y2019/vision/calibrate_9971.sh
index 9a05ce2..5951059 100755
--- a/y2019/vision/calibrate_9971.sh
+++ b/y2019/vision/calibrate_9971.sh
@@ -17,7 +17,7 @@
 calibration \
     --camera_id 1 \
     --tape_start_x=-12.5 \
-    --tape_start_y=0.0 \
+    --tape_start_y=-1.0 \
     --tape_direction_x=-1.0 \
     --tape_direction_y=0.0 \
     --beginning_tape_measure_reading=16 \