docs : DP House Robber

Author: cyeji

src/main/java/sgyj/leetcode/Readme.md

@@ -33,4 +33,5 @@
 - [746. Min Cost Climbing Stairs](https://leetcode.com/problems/min-cost-climbing-stairs/description/)
 - [128. Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/)
 - [322. Coin Change](https://leetcode.com/problems/coin-change/description/)
-- [62. Unique Paths](https://leetcode.com/problems/unique-paths/description/)
+- [62. Unique Paths](https://leetcode.com/problems/unique-paths/description/)
+- [198. House Robber](https://leetcode.com/problems/house-robber/description/)