Update cpu_scheduling_algorithms/non_preemptive_sjf_scheduling.cpp

Co-authored-by: realstealthninja <68815218+realstealthninja@users.noreply.github.com>

cpu_scheduling_algorithms/non_preemptive_sjf_scheduling.cpp

@@ -310,7 +310,8 @@ static void test() {
 }
 
 /**
- * @brief Entry point of the program
+ * @brief Main function
+ * @returns 0 on successful exit
  */
 int main() {
     test();