fix flake8 (#154)

Author: tomkralidis

csv2bufr/cli.py

@@ -91,7 +91,7 @@ def create_mappings(ctx, sequence, output, verbosity):
     if not sequence:
         click.echo("Error: Please provide a BUFRsequence.", err=True)
         ctx.exit(1)  # Exit with a non-zero status to indicate an error
-    
+
     msg = BUFRMessage(sequence)
     template = msg.create_template()
     if output: