modify client config comment

Author: tigersk

tigeropen/examples/client_config.py

@@ -18,7 +18,9 @@ def get_client_config():
     client_config = TigerOpenClientConfig(sandbox_debug=is_sandbox)
     client_config.private_key = read_private_key('your private key file path')
     client_config.tiger_id = 'your tiger id'
-    client_config.account = 'your account'  # 环球账户
+    client_config.account = 'your account'  # 环球账户.
+    # 只使用一个账户时，不论是环球账户, 标准账户或是模拟账户, 都填在 client_config.account 下, 默认只会使用这里的账户.
+    # standard_account 属性和 paper_account 属性只是为多账户时取用方便, 一般可忽略
     client_config.standard_account = None  # 标准账户
     client_config.paper_account = None  # 模拟账户
     client_config.language = Language.en_US