Fixed drivetrain so it drives better.

Change-Id: I2997bb502f6f7e7fdd876b14f335f736e1c276c1
diff --git a/frc971/wpilib/wpilib_interface.cc b/frc971/wpilib/wpilib_interface.cc
index 52bfaf3..9c82ae5 100644
--- a/frc971/wpilib/wpilib_interface.cc
+++ b/frc971/wpilib/wpilib_interface.cc
@@ -449,8 +449,8 @@
   virtual void Write() override {
     auto &queue = ::frc971::control_loops::drivetrain_queue.output;
     LOG_STRUCT(DEBUG, "will output", *queue);
-    left_drivetrain_talon_->Set(-queue->left_voltage / 12.0);
-    right_drivetrain_talon_->Set(queue->right_voltage / 12.0);
+    left_drivetrain_talon_->Set(queue->left_voltage / 12.0);
+    right_drivetrain_talon_->Set(-queue->right_voltage / 12.0);
   }
 
   virtual void Stop() override {