chore: fix lint error in job.py module (#103)

Author: plamut

google/cloud/bigquery/job.py

@@ -3116,7 +3116,7 @@ def _format_for_exception(query, job_id):
  template = "\n\n(job ID: {job_id})\n\n{header}\n\n{ruler}\n{body}\n{ruler}"
 
  lines = query.splitlines()
- max_line_len = max(len(l) for l in lines)
+ max_line_len = max(len(line) for line in lines)
 
  header = "-----Query Job SQL Follows-----"
  header = "{:^{total_width}}".format(header, total_width=max_line_len + 5)