Update README.md

Author: proPrateekSahu

README.md

@@ -35,3 +35,4 @@ Feel free to add basic python scripts/programs that helped you learn python. I h
 18. [aritmetic median, biggest number and lowest number](https://github.com/arnavvgupta/functionMaxMinMedian.py) 
 19. [Insertion Sort](https://github.com/musaibbatghar/Beginners-Python-Projects/blob/main/Insertion_Sort.py) - [Musaib Batghar](https://github.com/musaibbatghar)
 20. [Snake game](https://github.com/Aishanipach/Beginners-Python-Projects/compare/main...meanshkumar:Beginners-Python-Projects:main?expand=1)- [Ansh Kumar](https://github.com/meanshkumar)
+21. [Merge_Sort](https://github.com/proPrateekSahu/Beginners-Python-Projects/blob/main/MergeSort.py) - [Prateek Kumar Sahu](https://github.com/proPrateekSahu)