Update README.md

Author: anantkaushik

README.md

@@ -17,7 +17,7 @@ Data Structures and Algorithms implementation in Python.
     	- [x] [Singly Linked List](Data-Structures/Linked-List/Singly-Linked-List.py)
         - [x] [Doubly Linked List](Data-Structures/Linked-List/Doubly-Linked-List.py)
     - [x] [Tree](Data-Structures/Tree)
-    	- [x] [Binary Serach Tree](Data-Structures/Tree/Binary-Search-Tree.py)
+    	- [x] [Binary Search Tree](Data-Structures/Tree/Binary-Search-Tree.py)
     - [x] [Trie](Data-Structures/Trie/trie.py)
     - [x] [Graphs](Data-Structures/Graphs)
     	- [x] [Graph(Using Adjacency List)](Data-Structures/Graphs/graphs-using-adjacency-list.py)