Update file test3.cpp

Worksheet2/test3.cpp

 #include <chrono>
 #include <iostream>
 #include "bumpalld.hpp"
-//#include "bumpall.hpp"
+//#include "bumpall.hpp" // Remove and comment the above to compare the compile times
+
 
 void benchmarkBumpAllocator() {
     const size_t blockSize = 1000000; // Size of the memory block