fix formatting

Author: necnec

pandas/io/gbq.py

@@ -399,7 +399,7 @@ def run_query(self, query, **kwargs):
         if configuration is not None:
             if 'query' in configuration:
                 job_data['configuration']['query']\
-                	.update(configuration['query'])
+                    .update(configuration['query'])
             else:
                 job_data['configuration'] = configuration