Adjusted exception message for test_create_connection_open_con_addr test

Author: paulocheque

tests/test_tcp.py

@@ -404,7 +404,7 @@ async def client(addr):
             writer.write(b'AAAA')
             self.assertEqual(await reader.readexactly(2), b'OK')
 
-            re = r'(a bytes-like object)|(must be byte-ish)'
+            re = r'(must be a bytes)|(a bytes-like object)|(must be byte-ish)'
             with self.assertRaisesRegex(TypeError, re):
                 writer.write('AAAA')