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/javascript/chapter_heap/my_heap.js

@@ -20,17 +20,17 @@ class MaxHeap {
         }
     }
 
-    /* 获取左子节点索引 */
+    /* 获取左子节点的索引 */
     #left(i) {
         return 2 * i + 1;
     }
 
-    /* 获取右子节点索引 */
+    /* 获取右子节点的索引 */
     #right(i) {
         return 2 * i + 2;
     }
 
-    /* 获取父节点索引 */
+    /* 获取父节点的索引 */
     #parent(i) {
         return Math.floor((i - 1) / 2); // 向下整除
     }