Update comment for push_heap.

Author: cgyurgyik

STL_examples.cpp

@@ -822,11 +822,11 @@ TEST(make_heap, ExampleOne) {
 }
 
 TEST(push_heap, ExampleOne) {
- // Constructs a max heap.
  std::vector<int> v{1,2,3,4,5,6,5,4};
  std::make_heap(v.begin(), v.end());
 
  v.push_back(9);
+ // Pushes 9 onto the heap while maintaining max heap conditions.
  std::push_heap(v.begin(), v.end());
 
  const std::vector<int> expected_heap{9,6,5,5,2,3,1,4,4};