Videocapture samples cleanup cpp

modules/videoio/include/opencv2/videoio.hpp

@@ -708,12 +708,12 @@ namespace internal { class VideoCapturePrivateAccessor; }
 The class provides C++ API for capturing video from cameras or for reading video files and image sequences.
 
 Here is how the class can be used:
-@include samples/cpp/videocapture_basic.cpp
+@include samples/cpp/snippets/videocapture_basic.cpp
 
 @note In @ref videoio_c "C API" the black-box structure `CvCapture` is used instead of %VideoCapture.
 @note
--   (C++) A basic sample on using the %VideoCapture interface can be found at
-    `OPENCV_SOURCE_CODE/samples/cpp/videocapture_starter.cpp`
+-   (C++) A basic sample on using the %VideoCapture interface with audio can be found at
+    `OPENCV_SOURCE_CODE/samples/cpp/videocapture_with_audio.cpp`
 -   (Python) A basic sample on using the %VideoCapture interface can be found at
     `OPENCV_SOURCE_CODE/samples/python/video.py`
 -   (Python) A multi threaded video processing sample can be found at
@@ -991,7 +991,7 @@ class IVideoWriter;
 Check @ref tutorial_video_write "the corresponding tutorial" for more details
 */
 
-/** @example samples/cpp/videowriter_basic.cpp
+/** @example samples/cpp/videowriter.cpp
 An example using VideoCapture and VideoWriter class
 */