Updated README

Author: OmkarPathak

README.md

@@ -26,6 +26,6 @@ Pune, Maharashtra, India.<br />
 * [Stack Concept](https://github.com/OmkarPathak/Data-Structures-using-Python/tree/master/Stack/Stack.ipynb)
     * [Stack implementation](https://github.com/OmkarPathak/Data-Structures-using-Python/tree/master/Stack/Stack.py)
     * [Infix to Postfix conversion](Stack/P01_InfixToPostfix.py)
-    * [Balanced Parenthesis](Stack/P02_BalancedParenthsis.py)
+    * [Balanced Parenthesis](Stack/P02_BalancedParenthesis.py)
     * [Decimal to Binary conversion using Stack](Stack/P03_DecimalToBinary.py)
     * [Reversing a String using stack](Stack/P04_ReverseString.py)