Update the book based on the revised second edition (#1014)

* Revised the book

* Update the book with the second revised edition

* Revise base on the manuscript of the first edition

codes/dart/chapter_hashing/array_hash_map.dart

@@ -106,7 +106,7 @@ void main() {
   map.printHashMap();
 
   /* 查询操作 */
-  // 向哈希表输入键 key ，得到值 value
+  // 向哈希表中输入键 key ，得到值 value
   String? name = map.get(15937);
   print("\n输入学号 15937 ，查询到姓名 $name");