rephrased references to left and right side images for clarity

Author: Marco Dalla Vecchia

episodes/fig/source/06-blurring/create_blur_animation.py

@@ -130,7 +130,7 @@ def update(frame):
     ax1.add_patch(k_rect)
     ax1.add_patch(c_rect1)
 
-    # Fix limits of the right image (without padding) so that it is the same size as the left image (with padding)
+    # Fix limits of the image on the right (without padding) so that it is the same size as the image on the left (with padding)
     ax2.set(
         ylim=((img_pad.shape[0] - kernel_size / 2), -kernel_size / 2), 
         xlim=(-kernel_size / 2, (img_pad.shape[1] - kernel_size / 2))