Update oop.md

algorithms/oop.md

@@ -3,6 +3,6 @@ Object-Oriented Programming
 
 - How would you design a chess game? What classes and objects would you use? What methods would they have?
 - How would you design the data structures for a book keeping system for a library?
-- Explain how you would design a http server? give examples of classes, methods, and interfaces. What are the challenging problems here?
+- Explain how you would design a HTTP server? Give examples of classes, methods, and interfaces. What are the challenges here?
 - Discuss algorithms and data structures for a garbage collector?
--How would you implement an HR system to keep track of employee salaries and benefits?
+- How would you implement an HR system to keep track of employee salaries and benefits?