Fix barrel locations

They didn't match the rules.

Change-Id: I02342f97a8ba05486d1d9aefcaca8e367c8353d9
diff --git a/frc971/control_loops/python/drawing_constants.py b/frc971/control_loops/python/drawing_constants.py
index becc7f6..8d64e0b 100644
--- a/frc971/control_loops/python/drawing_constants.py
+++ b/frc971/control_loops/python/drawing_constants.py
@@ -99,8 +99,8 @@
         if BARREL in FIELD.tags:
             # barrels
             field[1][4] = True
-            field[3][8] = True
-            field[1][10] = True
+            field[3][7] = True
+            field[1][9] = True
         if SLALOM in FIELD.tags:
             field[1][3:8] = True  # 3 to 7 inclusive
             field[1][9] = True