Fixed PEP8

Author: akshay-joshi

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/schema_diff_table_utils.py

@@ -219,7 +219,8 @@ def table_constraint_comp(source_table, target_table):
                              'unique_constraint': ['col_count',
                                                    'condeferrable',
                                                    'condeffered',
-                                                   'columns', 'indnullsnotdistinct'],
+                                                   'columns',
+                                                   'indnullsnotdistinct'],
                              'check_constraint': ['consrc'],
                              'exclude_constraint': ['amname',
                                                     'indconstraint',