update readme

Author: code4craft

README.md

@@ -16,11 +16,11 @@ Jsoup学习笔记
 
 3. [Document的输出](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup3.md)
 
-4. 语法分析parser
+4. HTML语法分析parser
 
 	1. [语法分析与状态机基础](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup4.md)
-	2. [词法分析](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup5.md)
-	3. [语法分析](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup6.md)
+	2. [词法分析Tokenizer](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup5.md)
+	3. [语法检查及DOM树构建](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup6.md)
 
 5. [CSS Selector](https://github.com/code4craft/jsoup-learning/blob/master/blogs/jsoup7.md)