updates

Author: kalpak92

Diff for: LeetCode/README.md

@@ -120,4 +120,4 @@
 ## DFS
 - [x] [Number of Islands](https://github.com/kalpak92/DataStructures_Algorithms/tree/master/LeetCode/200.%20Number%20of%20Islands)
 - [x] [Surrounded Regions](https://github.com/kalpak92/DataStructures_Algorithms/tree/master/LeetCode/130.%20Surrounded%20Regions)
-- [x] [Walls and Gates]()
+- [x] [Walls and Gates](https://github.com/kalpak92/DataStructures_Algorithms/tree/master/LeetCode/286.%20Walls%20and%20Gates)