Tutorials: moved Megamind.avi files to samples/data folder

doc/tutorials/videoio/video-input-psnr-ssim/video_input_psnr_ssim.markdown

@@ -20,10 +20,10 @@ As a test case where to show off these using OpenCV I've created a small program
 video files and performs a similarity check between them. This is something you could use to check
 just how well a new video compressing algorithms works. Let there be a reference (original) video
 like [this small Megamind clip
-](https://github.com/Itseez/opencv/tree/master/samples/cpp/tutorial_code/videoio/video-input-psnr-ssim/video/Megamind.avi) and [a compressed
-version of it ](https://github.com/Itseez/opencv/tree/master/samples/cpp/tutorial_code/videoio/video-input-psnr-ssim/video/Megamind_bugy.avi).
+](https://github.com/Itseez/opencv/tree/master/samples/data/Megamind.avi) and [a compressed
+version of it ](https://github.com/Itseez/opencv/tree/master/samples/data/Megamind_bugy.avi).
 You may also find the source code and these video file in the
-`samples/cpp/tutorial_code/videoio/video-input-psnr-ssim/` folder of the OpenCV source library.
+`samples/data` folder of the OpenCV source library.
 
 @include cpp/tutorial_code/videoio/video-input-psnr-ssim/video-input-psnr-ssim.cpp