doc: upgraded for compatibility with doxygen 1.12

modules/core/include/opencv2/core.hpp

@@ -463,10 +463,6 @@ The function can also be emulated with a matrix expression, for example:
 */
 CV_EXPORTS_W void scaleAdd(InputArray src1, double alpha, InputArray src2, OutputArray dst);
 
-/** @example samples/cpp/tutorial_code/HighGUI/AddingImagesTrackbar.cpp
-Check @ref tutorial_trackbar "the corresponding tutorial" for more details
-*/
-
 /** @brief Calculates the weighted sum of two arrays.
 
 The function addWeighted calculates the weighted sum of two arrays as follows:

modules/highgui/include/opencv2/highgui.hpp

@@ -544,7 +544,7 @@ updated automatically.
 @param userdata Optional user data that is passed to the callback.
 @note If the `value` pointer is `nullptr`, the trackbar position must be manually managed.
 Call the callback function manually with the desired initial value to avoid runtime warnings.
-@see #tutorial_trackbar
+@see \ref tutorial_trackbar
  */
 CV_EXPORTS int createTrackbar(const String& trackbarname, const String& winname,
                               int* value, int count,