Use Modern C++ style for examples

Switch to stack-based objects.

Author: Colin Robertson

docs/cpp/template-specialization-cpp.md

@@ -285,25 +285,23 @@ public:
 };
 
 int main() {
-   auto dict = new Dictionary<char*, char*>(10);
-   dict->print();
-   dict->add("apple", "fruit");
-   dict->add("banana", "fruit");
-   dict->add("dog", "animal");
-   dict->print();
-   delete dict;
-   
-   auto dict_specialized = new Dictionary<int, char*>(10);
-   dict_specialized->print();
-   dict_specialized->add(100, "apple");
-   dict_specialized->add(101, "banana");
-   dict_specialized->add(103, "dog");
-   dict_specialized->add(89, "cat");
-   dict_specialized->print();
-   dict_specialized->sort();
+   Dictionary<const char*, const char*> dict(10);
+   dict.print();
+   dict.add("apple", "fruit");
+   dict.add("banana", "fruit");
+   dict.add("dog", "animal");
+   dict.print();
+
+   Dictionary<int, const char*> dict_specialized(10);
+   dict_specialized.print();
+   dict_specialized.add(100, "apple");
+   dict_specialized.add(101, "banana");
+   dict_specialized.add(103, "dog");
+   dict_specialized.add(89, "cat");
+   dict_specialized.print();
+   dict_specialized.sort();
    cout << endl << "Sorted list:" << endl;
-   dict_specialized->print();
-   delete dict_specialized;
+   dict_specialized.print();
 }
 ```