readme updated

Author: Partho Biswas

README.md

@@ -53,7 +53,7 @@ A place where I upload my daily practice on Data Structure and Algorithm problem
 |05| Validate_BST | [Python](algoexpert.io/python/Validate_BST.py)|
 |06| Three_Number_Sum | [Python](algoexpert.io/python/Three_Number_Sum.py)|
 |07| Suffix_Trie_Construction | [Python](algoexpert.io/python/Suffix_Trie_Construction.py)|
-|08| Smallest Difference | [Python](algoexpert.io/python/Smallest Difference.py)|
+|08| Smallest Difference | [Python](algoexpert.io/python/Smallest%20Difference.py)|
 |09| Single_Cycle_Check | [Python](algoexpert.io/python/Single_Cycle_Check.py)|
 |10| Selection_Sort | [Python](algoexpert.io/python/Selection_Sort.py)|
 |11| Search_In_Sorted_Matrix | [Python](algoexpert.io/python/Search_In_Sorted_Matrix.py)|