Update greedy_algorithms/digit_separation.cpp

Co-authored-by: realstealthninja <[email protected]>

Author: mjk22071998

greedy_algorithms/digit_separation.cpp

@@ -139,7 +139,7 @@ void tests(){
     reverseOrder = ds.digitSeparationReverseOrder(number);
     assert(reverseOrder == expectedReverse);
 int main() {
-    tests();
+    tests(); // run self test implementation
 
     return 0;
 }