Fix function signatures in MockNamedValueComparator in example

Author: devMichaelJones

mocking_manual.markdown

@@ -200,11 +200,11 @@ MyTypeComparator is a custom comparator, which implements the MockNamedValueComp
 class MyTypeComparator : public MockNamedValueComparator
 {
 public:
-    virtual bool isEqual(void* object1, void* object2)
+    virtual bool isEqual(const void* object1, const void* object2)
     {
         return object1 == object2;
     }
-    virtual SimpleString valueToString(void* object)
+    virtual SimpleString valueToString(cont void* object)
     {
         return StringFrom(object);
     }