Update README.md

Author: krystism

algorithms/PascalsTriangle/README.md

@@ -82,3 +82,5 @@ vector<vector<int>> generate(int n) {
 
 * 初始化第一项为1
 * 分数从左到右为`5/1, 4/2， 3/3, 2/4, 1/5`， 因此从左到右的数字为`1 * 5/1 == 5, 5 * 4/2 == 10, 10 * 3/3 = 10, 10 * 2/4 == 5, 5 * 1/5 == 1`, 最后结果为`1,5,10,10,5,1`
+
+实现见[Pascal's Triangle II](../PascalsTriangleII)