make more clear function name

day2/day.cpp

@@ -22,7 +22,7 @@ int main() {
       num_s = splitString(line);
       num.clear();
 
-      CastStringVectorToIntVector(num_s, num);
+      ConvertStringVectorToIntVector(num_s, num);
 
       // decreasing
       bool safe = true;

day2/second.cpp

@@ -50,7 +50,7 @@ int main() {
       num_s = splitString(line);
       num.clear();
 
-      CastStringVectorToIntVector(num_s, num);
+      ConvertStringVectorToIntVector(num_s, num);
 
       // Check safety with Problem Dampener support
       if (isSafeWithDampener(num)) {