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/cpp/chapter_hashing/hash_map.cpp

@@ -22,7 +22,7 @@ int main() {
     printHashMap(map);
 
     /* 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[15937];
     cout << "\n输入学号 15937 ，查询到姓名 " << name << endl;