code typo in R.20 (#1619)

Author: YaroShkvorets

CppCoreGuidelines.md

@@ -9494,8 +9494,8 @@ Consider:
     {
         X x;
         X* p1 { new X };              // see also ???
-        unique_ptr<T> p2 { new X };   // unique ownership; see also ???
-        shared_ptr<T> p3 { new X };   // shared ownership; see also ???
+        unique_ptr<X> p2 { new X };   // unique ownership; see also ???
+        shared_ptr<X> p3 { new X };   // shared ownership; see also ???
         auto p4 = make_unique<X>();   // unique_ownership, preferable to the explicit use "new"
         auto p5 = make_shared<X>();   // shared ownership, preferable to the explicit use "new"
     }