updated a comment

Author: pavelkomarov

examples/1_basic_tutorial.ipynb

@@ -89,7 +89,7 @@ def _constant_derivative(x, P0, A, C, R, Q, forwardbackward):
     x_hat_forward = xhat_smooth[:, 0] # first dimension is time, so slice first element at all times
     dxdt_hat_forward = xhat_smooth[:, 1]
 
-    if not forwardbackward: # bound out here if not doing the same in reverse and then combining
+    if not forwardbackward: # bounce out here if not doing the same in reverse and then combining
         return x_hat_forward, dxdt_hat_forward
 
     xhat0[0] = x[-1] # starting from the other end of the signal