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/java/chapter_greedy/max_capacity.java

@@ -9,7 +9,7 @@ package chapter_greedy;
 public class max_capacity {
     /* 最大容量：贪心 */
     static int maxCapacity(int[] ht) {
-        // 初始化 i, j 分列数组两端
+        // 初始化 i, j，使其分列数组两端
         int i = 0, j = ht.length - 1;
         // 初始最大容量为 0
         int res = 0;