Fix data argument style in executemany() test

Author: elprans

tests/test_execute.py

@@ -104,7 +104,9 @@ async def test_execute_many_1(self):
         try:
             result = await self.con.executemany('''
                 INSERT INTO exmany VALUES($1, $2)
-            ''', (['a', 1], ['b', 2], ['c', 3], ['d', 4]))
+            ''', [
+                ('a', 1), ('b', 2), ('c', 3), ('d', 4)
+            ])
 
             self.assertIsNone(result)