Update docstrings and usage examples

parser.py

@@ -4,7 +4,7 @@ from pathlib import Path
 
 def parse_can_log(input_path: str | Path, out_bus1: str | Path, out_bus2: str | Path) -> None:
     """
-    Parses a CAN bus log file and saves valid frames to separate CSV files for Bus 1 and Bus 2.
+    Parses a CAN bus log file from CANdigger and saves valid frames to separate CSV files for Bus 1 and Bus 2.
     Corrupted, incomplete, or debug frames are silently discarded.
     """
     input_file = Path(input_path)
@@ -65,7 +65,7 @@ if __name__ == '__main__':
     # Example usage:
     # parse_can_log('can_traffic.txt', 'bus1_output.csv', 'bus2_output.csv')
     # or on CLI:
-    # python3 can_parser.py your_log.txt bus1_output.csv bus2_output.csv
+    # python3 can_parser.py can_traffic.txt' bus1_output.csv bus2_output.csv
 
     if __name__ == '__main__':
         import argparse