Update BinarySearch.md

Author: CodingWallah

BinarySearch.md

@@ -6,7 +6,7 @@ Reverse Binary Search  - [50,45,40,35,30,20] target= 30;
 | Questions  | Practice Link | Code Solutions | Video Solutions | HINT
 -|-|-|-|-
 Find Valid Mountain Array | [Leetcode](https://leetcode.com/problems/valid-mountain-array/) | | | 2 Pointer Approach
-Find Peak Element in Mountin Array (Easy ) | [Leetcode](https://leetcode.com/problems/peak-index-in-a-mountain-array/) | | | Binary Search
+Find Peak Element in Mountin Array (Easy ) | [Leetcode](https://leetcode.com/problems/find-peak-element/) | | | Binary Search
 Find Peak Index in Mountain Array (Medium) | [Leetcode](https://leetcode.com/problems/peak-index-in-a-mountain-array/) | | | Binary Search
 Find in Mountain Array (Hard)| [Leetcode](https://leetcode.com/problems/find-in-mountain-array/description/) | | | Binary Search
 Find Longest Mountain in Array | [Leetcode](https://leetcode.com/problems/longest-mountain-in-array/) | | | Binary Search