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/rust/chapter_heap/my_heap.rs

@@ -24,17 +24,17 @@ impl MaxHeap {
         heap
     }
 
-    /* 获取左子节点索引 */
+    /* 获取左子节点的索引 */
     fn left(i: usize) -> usize {
         2 * i + 1
     }
 
-    /* 获取右子节点索引 */
+    /* 获取右子节点的索引 */
     fn right(i: usize) -> usize {
         2 * i + 2
     }
 
-    /* 获取父节点索引 */
+    /* 获取父节点的索引 */
     fn parent(i: usize) -> usize {
         (i - 1) / 2 // 向下整除
     }