Fix line count in readme

Author: auxten

README-zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md)
 
-"Go SQL DB" 是一个研究目的的支持 SQL 查询的关系型数据库。主要的目标是为了向数据库爱好者展示一个关系型数据库的基本原理和关键设计。因此，为了便于理解，采取了很多取巧但不是很严谨的设计，代码量控制在了 2000 行左右。
+"Go SQL DB" 是一个研究目的的支持 SQL 查询的关系型数据库。主要的目标是为了向数据库爱好者展示一个关系型数据库的基本原理和关键设计。因此，为了便于理解，采取了很多取巧但不是很严谨的设计，代码量控制在了 2000 行左右（包含约 400 行单元测试代码）。
 
 ## 特性列表
 

README.md

@@ -2,7 +2,7 @@
 
 [中文](README-zh.md)
 
-"Go SQL DB" is a relational database that supports SQL queries for research purposes. The main goal is to show the basic principles and key design of a relational database to database enthusiasts. Therefore, to easily understand, a lot of tricks but not very rigorous design was adopted, and the amount of code was controlled at about 2000 lines.
+"Go SQL DB" is a relational database that supports SQL queries for research purposes. The main goal is to show the basic principles and key design of a relational database to database enthusiasts. Therefore, to easily understand, a lot of tricks but not very rigorous design was adopted, and the amount of code was controlled at about 2000 lines (including 400 lines of unit tests).
 
 ## Features