Fix line length lint error in comment

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Co-Authored-By: Claude <[email protected]>

Author: talmo

sleap/sleap_io_adaptors/lf_labels_utils.py

@@ -890,7 +890,7 @@ def video_callback(
         # Replace the video filenames with changes by user
         for i, item in enumerate(video_list):
             if is_image_sequence[i]:
-                # For image sequences, update all filenames in the list with the new directory
+                # For image sequences, update all filenames with new directory
                 original_filenames = item.filename
                 if filenames[i] != original_filenames[0]:
                     # The first filename changed, update the directory for all files