message: SourceForge folder update
  The folder `http://sourceforge.net/projects/opencvlibrary/files/opencv-win/` is stale and wasn't updated since 2018. The parent folder `http://sourceforge.net/projects/opencvlibrary/files/` has fresh windows install exe files.
diff: @@ -26,7 +26,7 @@ Installation by Using the Pre-built Libraries {#tutorial_windows_install_prebuil
  =============================================
  -# Launch a web browser of choice and go to our [page on
  - Sourceforge](http://sourceforge.net/projects/opencvlibrary/files/opencv-win/).
  + Sourceforge](http://sourceforge.net/projects/opencvlibrary/files/).
  -# Choose a build you want to use and download it.
  -# Make sure you have admin rights. Unpack the self-extracting archive.
  -# You can check the installation at the chosen path as you can see below.
  