s/controla/controlla/g

Change-Id: I03c0f320181b969edb271cded8a80dcebd12334e
diff --git a/y2015/control_loops/python/claw.py b/y2015/control_loops/python/claw.py
index 17ea700..cdb76ae 100755
--- a/y2015/control_loops/python/claw.py
+++ b/y2015/control_loops/python/claw.py
@@ -64,7 +64,7 @@
     self.A, self.B = self.ContinuousToDiscrete(
         self.A_continuous, self.B_continuous, self.dt)
 
-    controlability = controls.ctrb(self.A, self.B)
+    controllability = controls.ctrb(self.A, self.B)
 
     print "Free speed is", self.free_speed * numpy.pi * 2.0 / 60.0 / self.G