C.150/C.151: fix compiler syntax error in Example (#1461)

- remove unnecessary space in section Reason

CppCoreGuidelines.md

@@ -7909,7 +7909,7 @@ It also ensures exception safety in complex expressions.
 
 ##### Example
 
-    unique_ptr<Foo> p {new<Foo>{7}};   // OK: but repetitive
+    unique_ptr<Foo> p {new Foo{7}};    // OK: but repetitive
 
     auto q = make_unique<Foo>(7);      // Better: no repetition of Foo
 
@@ -7942,7 +7942,7 @@ It also gives an opportunity to eliminate a separate allocation for the referenc
 
     void test() {
         // OK: but repetitive; and separate allocations for the Bar and shared_ptr's use count
-        shared_ptr<Bar> p {new<Bar>{7}};
+        shared_ptr<Bar> p {new Bar{7}};
 
         auto q = make_shared<Bar>(7);   // Better: no repetition of Bar; one object
     }