Fix more comments

Author: chaithyagr

src/mrinufft/trajectories/tools.py

@@ -642,8 +642,8 @@ def _residual(gi):
     nb_shots, nb_dimension = kspace_end_loc.shape
     G = np.zeros((nb_shots, nb_raster_points, nb_dimension), dtype=np.float32)
     for i in range(nb_shots):
-        start = n_ramp_down[i,0]
-        G[i, : start] = np.linspace(
+        start = n_ramp_down[i, 0]
+        G[i, :start] = np.linspace(
             start_gradients[i], gi[i], n_ramp_down[i], endpoint=False, axis=-1
         )
         if n_plateau[i, d] > 0: