Windows: fix wrong cursor install location
This PR fixes a portion of #261 (closed) to correct the installation location of cursors on Windows so that they go in Adwaita/cursors instead of Adwaita/Adwaita/cursors.
This PR fixes a portion of #261 (closed) to correct the installation location of cursors on Windows so that they go in Adwaita/cursors instead of Adwaita/Adwaita/cursors.